28354978074 has 16 divisors (see below), whose sum is σ = 56750221440. Its totient is φ = 9444948480.

The previous prime is 28354978033. The next prime is 28354978081. The reversal of 28354978074 is 47087945382.

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, 1668562 + ... + 1685469.

It is an arithmetic number, because the mean of its divisors is an integer number (3546888840).

Almost surely, 2^28354978074 is an apocalyptic number.

28354978074 is an abundant number, since it is smaller than the sum of its proper divisors (28395243366).

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

28354978074 is a wasteful number, since it uses less digits than its factorization.

28354978074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355445.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 28354978074 in words is "twenty-eight billion, three hundred fifty-four million, nine hundred seventy-eight thousand, seventy-four".