20343772 has 12 divisors (see below), whose sum is σ = 36103536. Its totient is φ = 10028480.

The previous prime is 20343767. The next prime is 20343787. The reversal of 20343772 is 27734302.

It is a super-3 number, since 3×20343772³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20343772.

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, 35533 + ... + 36100.

It is an arithmetic number, because the mean of its divisors is an integer number (3008628).

Almost surely, 2^20343772 is an apocalyptic number.

It is an amenable number.

20343772 is a deficient number, since it is larger than the sum of its proper divisors (15759764).

20343772 is a wasteful number, since it uses less digits than its factorization.

20343772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71708 (or 71706 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 20343772 is about 4510.4070769721. The cubic root of 20343772 is about 272.9881696403.

It can be divided in two parts, 20343 and 772, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20343772 in words is "twenty million, three hundred forty-three thousand, seven hundred seventy-two".