64120284 has 18 divisors (see below), whose sum is σ = 162081920. Its totient is φ = 21373416.

The previous prime is 64120261. The next prime is 64120289. The reversal of 64120284 is 48202146.

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

It is a super-2 number, since 2×64120284² = 8222821640481312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64120289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 890524 + ... + 890595.

Almost surely, 2^64120284 is an apocalyptic number.

It is an amenable number.

64120284 is an abundant number, since it is smaller than the sum of its proper divisors (97961636).

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

64120284 is a wasteful number, since it uses less digits than its factorization.

64120284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781129 (or 1781124 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 64120284 is about 8007.5142210301. The cubic root of 64120284 is about 400.2504348399.

The spelling of 64120284 in words is "sixty-four million, one hundred twenty thousand, two hundred eighty-four".