28401959200 has 36 divisors (see below), whose sum is σ = 69336284850. Its totient is φ = 11360783360.

The previous prime is 28401959153. The next prime is 28401959237. The reversal of 28401959200 is 295910482.

It can be written as a sum of positive squares in 3 ways, for example, as 22474807056 + 5927152144 = 149916^2 + 76988^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 17750425 + ... + 17752024.

Almost surely, 2^28401959200 is an apocalyptic number.

28401959200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28401959200 is an abundant number, since it is smaller than the sum of its proper divisors (40934325650).

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

28401959200 is a wasteful number, since it uses less digits than its factorization.

28401959200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35502469 (or 35502456 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 28401959200 in words is "twenty-eight billion, four hundred one million, nine hundred fifty-nine thousand, two hundred".