20152004 has 12 divisors (see below), whose sum is σ = 37340604. Its totient is φ = 9483264.

The previous prime is 20151991. The next prime is 20152019. The reversal of 20152004 is 40025102.

It can be written as a sum of positive squares in 2 ways, for example, as 12040900 + 8111104 = 3470^2 + 2848^2 .

It is a super-2 number, since 2×20152004² = 812206530432032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20152004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148109 + ... + 148244.

It is an arithmetic number, because the mean of its divisors is an integer number (3111717).

Almost surely, 2^20152004 is an apocalyptic number.

It is an amenable number.

20152004 is a deficient number, since it is larger than the sum of its proper divisors (17188600).

20152004 is a wasteful number, since it uses less digits than its factorization.

20152004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296374 (or 296372 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20152004 is about 4489.0983504486. The cubic root of 20152004 is about 272.1276973927.

Adding to 20152004 its reverse (40025102), we get a palindrome (60177106).

The spelling of 20152004 in words is "twenty million, one hundred fifty-two thousand, four".