20428152 has 32 divisors (see below), whose sum is σ = 54075600. Its totient is φ = 6408704.

The previous prime is 20428141. The next prime is 20428157. The reversal of 20428152 is 25182402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20428157) 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, 24627 + ... + 25442.

Almost surely, 2^20428152 is an apocalyptic number.

It is an amenable number.

20428152 is an abundant number, since it is smaller than the sum of its proper divisors (33647448).

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

20428152 is a wasteful number, since it uses less digits than its factorization.

20428152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50095 (or 50091 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 20428152 is about 4519.7513205928. The cubic root of 20428152 is about 273.3650739794.

The spelling of 20428152 in words is "twenty million, four hundred twenty-eight thousand, one hundred fifty-two".