28898632415 has 16 divisors (see below), whose sum is σ = 35155671840. Its totient is φ = 22801996800.

The previous prime is 28898632391. The next prime is 28898632457. The reversal of 28898632415 is 51423689882.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-28898632415 is a prime.

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, 97472 + ... + 259418.

It is an arithmetic number, because the mean of its divisors is an integer number (2197229490).

Almost surely, 2^28898632415 is an apocalyptic number.

28898632415 is a deficient number, since it is larger than the sum of its proper divisors (6257039425).

28898632415 is a wasteful number, since it uses less digits than its factorization.

28898632415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162442.

The product of its digits is 6635520, while the sum is 56.

The spelling of 28898632415 in words is "twenty-eight billion, eight hundred ninety-eight million, six hundred thirty-two thousand, four hundred fifteen".