20545976 has 16 divisors (see below), whose sum is σ = 42026040. Its totient is φ = 9339040.

The previous prime is 20545957. The next prime is 20546023. The reversal of 20545976 is 67954502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116651 + ... + 116826.

Almost surely, 2^20545976 is an apocalyptic number.

It is an amenable number.

20545976 is an abundant number, since it is smaller than the sum of its proper divisors (21480064).

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

20545976 is a wasteful number, since it uses less digits than its factorization.

20545976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233494 (or 233490 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 20545976 is about 4532.7669254000. The cubic root of 20545976 is about 273.8896317884.

The spelling of 20545976 in words is "twenty million, five hundred forty-five thousand, nine hundred seventy-six".