64272492 has 18 divisors (see below), whose sum is σ = 162466668. Its totient is φ = 21424152.

The previous prime is 64272473. The next prime is 64272539. The reversal of 64272492 is 29427246.

64272492 is a `hidden beast` number, since 642 + 7 + 2 + 4 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1785347 = 64272492 / (6 + 4 + 2 + 7 + 2 + 4 + 9 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 892638 + ... + 892709.

It is an arithmetic number, because the mean of its divisors is an integer number (9025926).

Almost surely, 2^64272492 is an apocalyptic number.

It is an amenable number.

64272492 is an abundant number, since it is smaller than the sum of its proper divisors (98194176).

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

64272492 is a wasteful number, since it uses less digits than its factorization.

64272492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785357 (or 1785352 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 64272492 is about 8017.0126605862. The cubic root of 64272492 is about 400.5668878825.

The spelling of 64272492 in words is "sixty-four million, two hundred seventy-two thousand, four hundred ninety-two".