28957394100 has 36 divisors (see below), whose sum is σ = 83783394464. Its totient is φ = 7721971680.

The previous prime is 28957394093. The next prime is 28957394107. The reversal of 28957394100 is 149375982.

It is an interprime number because it is at equal distance from previous prime (28957394093) and next prime (28957394107).

It is a self number, because there is not a number n which added to its sum of digits gives 28957394100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28957394107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48262024 + ... + 48262623.

Almost surely, 2^28957394100 is an apocalyptic number.

28957394100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28957394100 is an abundant number, since it is smaller than the sum of its proper divisors (54826000364).

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

28957394100 is a wasteful number, since it uses less digits than its factorization.

28957394100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96524664 (or 96524657 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 28957394100 in words is "twenty-eight billion, nine hundred fifty-seven million, three hundred ninety-four thousand, one hundred".