28437433500 has 96 divisors (see below), whose sum is σ = 94639813632. Its totient is φ = 6499982400.

The previous prime is 28437433487. The next prime is 28437433501. The reversal of 28437433500 is 533473482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28437433501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1343664 + ... + 1364663.

It is an arithmetic number, because the mean of its divisors is an integer number (985831392).

Almost surely, 2^28437433500 is an apocalyptic number.

28437433500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28437433500 is an abundant number, since it is smaller than the sum of its proper divisors (66202380132).

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

28437433500 is a wasteful number, since it uses less digits than its factorization.

28437433500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708356 (or 2708344 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 39.

The spelling of 28437433500 in words is "twenty-eight billion, four hundred thirty-seven million, four hundred thirty-three thousand, five hundred".