28887446040 has 64 divisors (see below), whose sum is σ = 86675326560. Its totient is φ = 7702164480.

The previous prime is 28887446039. The next prime is 28887446059. The reversal of 28887446040 is 4064478882.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1046820 + ... + 1074060.

Almost surely, 2^28887446040 is an apocalyptic number.

28887446040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28887446040 is an abundant number, since it is smaller than the sum of its proper divisors (57787880520).

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

28887446040 is a wasteful number, since it uses less digits than its factorization.

28887446040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36092 (or 36088 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 51.

The spelling of 28887446040 in words is "twenty-eight billion, eight hundred eighty-seven million, four hundred forty-six thousand, forty".