20484764 has 6 divisors (see below), whose sum is σ = 35848344. Its totient is φ = 10242380.

The previous prime is 20484733. The next prime is 20484767. The reversal of 20484764 is 46748402.

It is a super-2 number, since 2×20484764² = 839251112271392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20484767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560592 + ... + 2560599.

It is an arithmetic number, because the mean of its divisors is an integer number (5974724).

Almost surely, 2^20484764 is an apocalyptic number.

It is an amenable number.

20484764 is a deficient number, since it is larger than the sum of its proper divisors (15363580).

20484764 is a wasteful number, since it uses less digits than its factorization.

20484764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121195 (or 5121193 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 20484764 is about 4526.0097215980. The cubic root of 20484764 is about 273.6173642126.

The spelling of 20484764 in words is "twenty million, four hundred eighty-four thousand, seven hundred sixty-four".