20077284 has 12 divisors (see below), whose sum is σ = 46847024. Its totient is φ = 6692424.

The previous prime is 20077279. The next prime is 20077307. The reversal of 20077284 is 48277002.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 836542 + ... + 836565.

Almost surely, 2^20077284 is an apocalyptic number.

It is an amenable number.

20077284 is an abundant number, since it is smaller than the sum of its proper divisors (26769740).

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

20077284 is a wasteful number, since it uses less digits than its factorization.

20077284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673114 (or 1673112 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 20077284 is about 4480.7682377021. The cubic root of 20077284 is about 271.7909473557.

The spelling of 20077284 in words is "twenty million, seventy-seven thousand, two hundred eighty-four".