20772412 has 12 divisors (see below), whose sum is σ = 36894760. Its totient is φ = 10231056.

The previous prime is 20772403. The next prime is 20772443. The reversal of 20772412 is 21427702.

It is a congruent number.

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, 38487 + ... + 39022.

Almost surely, 2^20772412 is an apocalyptic number.

It is an amenable number.

20772412 is a deficient number, since it is larger than the sum of its proper divisors (16122348).

20772412 is a wasteful number, since it uses less digits than its factorization.

20772412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77580 (or 77578 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 20772412 is about 4557.6761622564. The cubic root of 20772412 is about 274.8921317991.

It can be divided in two parts, 2077 and 2412, that added together give a square (4489 = 67²).

The spelling of 20772412 in words is "twenty million, seven hundred seventy-two thousand, four hundred twelve".