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2111113020 = 2235311135007
BaseRepresentation
bin111110111010101…
…0000011100111100
312110010102122122010
41331311100130330
513310421104040
6545252251220
7103213110312
oct17565203474
95403378563
102111113020
11993739505
124ab010b10
132784ac203
141605400b2
15c550ee80
hex7dd5073c

2111113020 has 48 divisors (see below), whose sum is σ = 6101803008. Its totient is φ = 544802880.

The previous prime is 2111113007. The next prime is 2111113027. The reversal of 2111113020 is 203111112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2111112987 and 2111113005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111113027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565644 + ... + 569363.

It is an arithmetic number, because the mean of its divisors is an integer number (127120896).

Almost surely, 22111113020 is an apocalyptic number.

2111113020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111113020 is an abundant number, since it is smaller than the sum of its proper divisors (3990689988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111113020 is a wasteful number, since it uses less digits than its factorization.

2111113020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135050 (or 1135048 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2111113020 is about 45946.8499464327. The cubic root of 2111113020 is about 1282.8340970761.

Adding to 2111113020 its reverse (203111112), we get a palindrome (2314224132).

The spelling of 2111113020 in words is "two billion, one hundred eleven million, one hundred thirteen thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 31 60 62 93 124 155 186 310 372 465 620 930 1860 1135007 2270014 3405021 4540028 5675035 6810042 11350070 13620084 17025105 22700140 34050210 35185217 68100420 70370434 105555651 140740868 175926085 211111302 351852170 422222604 527778255 703704340 1055556510 2111113020