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20233020 = 2235337217
BaseRepresentation
bin100110100101…
…1101100111100
31102001221111010
41031023230330
520134424040
62001355220
7333656253
oct115135474
942057433
1020233020
111046a405
126938b10
134265502
14298979a
151b99e80
hex134bb3c

20233020 has 24 divisors (see below), whose sum is σ = 56652624. Its totient is φ = 5395456.

The previous prime is 20233019. The next prime is 20233033. The reversal of 20233020 is 2033202.

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 = 20232987 and 20233005.

It is a congruent number.

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, 168549 + ... + 168668.

It is an arithmetic number, because the mean of its divisors is an integer number (2360526).

Almost surely, 220233020 is an apocalyptic number.

20233020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20233020 is an abundant number, since it is smaller than the sum of its proper divisors (36419604).

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

20233020 is a wasteful number, since it uses less digits than its factorization.

20233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337229 (or 337227 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 20233020 is about 4498.1129376662. The cubic root of 20233020 is about 272.4918831575.

Adding to 20233020 its reverse (2033202), we get a palindrome (22266222).

The spelling of 20233020 in words is "twenty million, two hundred thirty-three thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 337217 674434 1011651 1348868 1686085 2023302 3372170 4046604 5058255 6744340 10116510 20233020