28251729074 has 16 divisors (see below), whose sum is σ = 43215590880. Its totient is φ = 13849130880.

The previous prime is 28251729061. The next prime is 28251729097. The reversal of 28251729074 is 47092715282.

It is a Curzon 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, 627839 + ... + 671330.

It is an arithmetic number, because the mean of its divisors is an integer number (2700974430).

Almost surely, 2^28251729074 is an apocalyptic number.

28251729074 is a deficient number, since it is larger than the sum of its proper divisors (14963861806).

28251729074 is a wasteful number, since it uses less digits than its factorization.

28251729074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299385.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 28251729074 in words is "twenty-eight billion, two hundred fifty-one million, seven hundred twenty-nine thousand, seventy-four".