20545504 has 36 divisors (see below), whose sum is σ = 47056464. Its totient is φ = 8804544.

The previous prime is 20545493. The next prime is 20545531. The reversal of 20545504 is 40554502.

It is a super-2 number, since 2×20545504² = 844235469228032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4984 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (1307124).

Almost surely, 2^20545504 is an apocalyptic number.

It is an amenable number.

20545504 is an abundant number, since it is smaller than the sum of its proper divisors (26510960).

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

20545504 is a wasteful number, since it uses less digits than its factorization.

20545504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13127 (or 13112 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 20545504 is about 4532.7148597722. The cubic root of 20545504 is about 273.8875344289.

The spelling of 20545504 in words is "twenty million, five hundred forty-five thousand, five hundred four".