81250374 has 16 divisors (see below), whose sum is σ = 163108080. Its totient is φ = 26982240.

The previous prime is 81250369. The next prime is 81250381. The reversal of 81250374 is 47305218.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23557 + ... + 26784.

It is an arithmetic number, because the mean of its divisors is an integer number (10194255).

Almost surely, 2^81250374 is an apocalyptic number.

81250374 is an abundant number, since it is smaller than the sum of its proper divisors (81857706).

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

81250374 is a wasteful number, since it uses less digits than its factorization.

81250374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50615.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 81250374 is about 9013.8989344234. The cubic root of 81250374 is about 433.1202172303.

The spelling of 81250374 in words is "eighty-one million, two hundred fifty thousand, three hundred seventy-four".