28631588443800 has 48 divisors (see below), whose sum is σ = 88757924177640. Its totient is φ = 7635090251520.

The previous prime is 28631588443751. The next prime is 28631588443807. The reversal of 28631588443800 is 834488513682.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28631588443807) 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, 23859656437 + ... + 23859657636.

Almost surely, 2^{28631588443800} is an apocalyptic number.

28631588443800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28631588443800 is an abundant number, since it is smaller than the sum of its proper divisors (60126335733840).

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

28631588443800 is a wasteful number, since it uses less digits than its factorization.

28631588443800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47719314092 (or 47719314083 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 60.

The spelling of 28631588443800 in words is "twenty-eight trillion, six hundred thirty-one billion, five hundred eighty-eight million, four hundred forty-three thousand, eight hundred".