20428752 has 40 divisors (see below), whose sum is σ = 54480640. Its totient is φ = 6589440.

The previous prime is 20428739. The next prime is 20428757. The reversal of 20428752 is 25782402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20428757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5377 + ... + 8352.

It is an arithmetic number, because the mean of its divisors is an integer number (1362016).

Almost surely, 2^20428752 is an apocalyptic number.

It is an amenable number.

20428752 is an abundant number, since it is smaller than the sum of its proper divisors (34051888).

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

20428752 is a wasteful number, since it uses less digits than its factorization.

20428752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13771 (or 13765 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 20428752 is about 4519.8176954386. The cubic root of 20428752 is about 273.3677503096.

The spelling of 20428752 in words is "twenty million, four hundred twenty-eight thousand, seven hundred fifty-two".