20249628432 has 80 divisors (see below), whose sum is σ = 57655601472. Its totient is φ = 6072975360.

The previous prime is 20249628409. The next prime is 20249628449. The reversal of 20249628432 is 23482694202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146473 + ... + 248904.

Almost surely, 2^20249628432 is an apocalyptic number.

20249628432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20249628432 is an abundant number, since it is smaller than the sum of its proper divisors (37405973040).

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

20249628432 is a wasteful number, since it uses less digits than its factorization.

20249628432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395496 (or 395490 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 20249628432 in words is "twenty billion, two hundred forty-nine million, six hundred twenty-eight thousand, four hundred thirty-two".