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2102440420 = 225359292819
BaseRepresentation
bin111110101010000…
…1011000111100100
312102112010001001201
41331110023013210
513301211043140
6544342332244
7103046306623
oct17524130744
95375101051
102102440420
11989855673
124a812a084
132767638b2
1415d3236ba
15c489a49a
hex7d50b1e4

2102440420 has 24 divisors (see below), whose sum is σ = 4427438400. Its totient is φ = 838630752.

The previous prime is 2102440399. The next prime is 2102440441. The reversal of 2102440420 is 240442012.

It is an interprime number because it is at equal distance from previous prime (2102440399) and next prime (2102440441).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139230 + ... + 153589.

It is an arithmetic number, because the mean of its divisors is an integer number (184476600).

Almost surely, 22102440420 is an apocalyptic number.

2102440420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102440420 is an abundant number, since it is smaller than the sum of its proper divisors (2324997980).

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

2102440420 is a wasteful number, since it uses less digits than its factorization.

2102440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293187 (or 293185 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2102440420 is about 45852.3763833457. The cubic root of 2102440420 is about 1281.0750286704.

Adding to 2102440420 its reverse (240442012), we get a palindrome (2342882432).

The spelling of 2102440420 in words is "two billion, one hundred two million, four hundred forty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 359 718 1436 1795 3590 7180 292819 585638 1171276 1464095 2928190 5856380 105122021 210244042 420488084 525610105 1051220210 2102440420