20147264 has 28 divisors (see below), whose sum is σ = 41721024. Its totient is φ = 9634944.

The previous prime is 20147251. The next prime is 20147273. The reversal of 20147264 is 46274102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5372 + ... + 8315.

Almost surely, 2^20147264 is an apocalyptic number.

It is an amenable number.

20147264 is an abundant number, since it is smaller than the sum of its proper divisors (21573760).

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

20147264 is a wasteful number, since it uses less digits than its factorization.

20147264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13722 (or 13712 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20147264 is about 4488.5703737382. The cubic root of 20147264 is about 272.1063597889.

The spelling of 20147264 in words is "twenty million, one hundred forty-seven thousand, two hundred sixty-four".