28078575154 has 24 divisors (see below), whose sum is σ = 49010747760. Its totient is φ = 12029622696.

The previous prime is 28078575143. The next prime is 28078575167. The reversal of 28078575154 is 45157587082.

It is a super-2 number, since 2×28078575154² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253857 + ... + 347275.

It is an arithmetic number, because the mean of its divisors is an integer number (2042114490).

Almost surely, 2^28078575154 is an apocalyptic number.

28078575154 is a deficient number, since it is larger than the sum of its proper divisors (20932172606).

28078575154 is a wasteful number, since it uses less digits than its factorization.

28078575154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96502 (or 96495 counting only the distinct ones).

The product of its (nonzero) digits is 3136000, while the sum is 52.

The spelling of 28078575154 in words is "twenty-eight billion, seventy-eight million, five hundred seventy-five thousand, one hundred fifty-four".