20274764 has 6 divisors (see below), whose sum is σ = 35480844. Its totient is φ = 10137380.

The previous prime is 20274733. The next prime is 20274769. The reversal of 20274764 is 46747202.

It is a super-2 number, since 2×20274764² = 822132110511392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20274764.

It is not an unprimeable number, because it can be changed into a prime (20274769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2534342 + ... + 2534349.

It is an arithmetic number, because the mean of its divisors is an integer number (5913474).

Almost surely, 2^20274764 is an apocalyptic number.

It is an amenable number.

20274764 is a deficient number, since it is larger than the sum of its proper divisors (15206080).

20274764 is a wasteful number, since it uses less digits than its factorization.

20274764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5068695 (or 5068693 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 20274764 is about 4502.7507148409. The cubic root of 20274764 is about 272.6791527358.

The spelling of 20274764 in words is "twenty million, two hundred seventy-four thousand, seven hundred sixty-four".