28465600404436 has 24 divisors (see below), whose sum is σ = 53671812411560. Its totient is φ = 13131821509632.

The previous prime is 28465600404419. The next prime is 28465600404497. The reversal of 28465600404436 is 63440400656482.

It can be written as a sum of positive squares in 4 ways, for example, as 818047891600 + 27647552512836 = 904460^2 + 5258094^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127969221 + ... + 128191468.

Almost surely, 2^{28465600404436} is an apocalyptic number.

28465600404436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28465600404436 is a deficient number, since it is larger than the sum of its proper divisors (25206212007124).

28465600404436 is a wasteful number, since it uses less digits than its factorization.

28465600404436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256162843 (or 256162841 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 52.

The spelling of 28465600404436 in words is "twenty-eight trillion, four hundred sixty-five billion, six hundred million, four hundred four thousand, four hundred thirty-six".