81274204 has 48 divisors (see below), whose sum is σ = 159739776. Its totient is φ = 35870400.

The previous prime is 81274183. The next prime is 81274213. The reversal of 81274204 is 40247218.

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, 287047 + ... + 287329.

It is an arithmetic number, because the mean of its divisors is an integer number (3327912).

Almost surely, 2^81274204 is an apocalyptic number.

It is an amenable number.

81274204 is a deficient number, since it is larger than the sum of its proper divisors (78465572).

81274204 is a wasteful number, since it uses less digits than its factorization.

81274204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 81274204 is about 9015.2206850415. The cubic root of 81274204 is about 433.1625565058.

The spelling of 81274204 in words is "eighty-one million, two hundred seventy-four thousand, two hundred four".