20772004 has 48 divisors (see below), whose sum is σ = 41771520. Its totient is φ = 8951040.

The previous prime is 20771987. The next prime is 20772019. The reversal of 20772004 is 40027702.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 93037 + ... + 93259.

It is an arithmetic number, because the mean of its divisors is an integer number (870240).

Almost surely, 2^20772004 is an apocalyptic number.

It is an amenable number.

20772004 is an abundant number, since it is smaller than the sum of its proper divisors (20999516).

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

20772004 is a wasteful number, since it uses less digits than its factorization.

20772004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20772004 is about 4557.6314023844. The cubic root of 20772004 is about 274.8903320286.

Adding to 20772004 its reverse (40027702), we get a palindrome (60799706).

The spelling of 20772004 in words is "twenty million, seven hundred seventy-two thousand, four".