20504076 has 24 divisors (see below), whose sum is σ = 48269424. Its totient is φ = 6773760.

The previous prime is 20504053. The next prime is 20504101. The reversal of 20504076 is 67040502.

It is a happy number.

It is a super-2 number, since 2×20504076² = 840834265227552, which contains 22 as substring.

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, 6205 + ... + 8916.

It is an arithmetic number, because the mean of its divisors is an integer number (2011226).

Almost surely, 2^20504076 is an apocalyptic number.

It is an amenable number.

20504076 is an abundant number, since it is smaller than the sum of its proper divisors (27765348).

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

20504076 is a wasteful number, since it uses less digits than its factorization.

20504076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15241 (or 15239 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20504076 is about 4528.1426655970. The cubic root of 20504076 is about 273.7033214128.

Adding to 20504076 its reverse (67040502), we get a palindrome (87544578).

The spelling of 20504076 in words is "twenty million, five hundred four thousand, seventy-six".