20337472 has 14 divisors (see below), whose sum is σ = 40357298. Its totient is φ = 10168704.

The previous prime is 20337469. The next prime is 20337481. The reversal of 20337472 is 27473302.

It can be written as a sum of positive squares in only one way, i.e., 13660416 + 6677056 = 3696^2 + 2584^2 .

It is a super-2 number, since 2×20337472² = 827225534701568, 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 20337472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158823 + ... + 158950.

Almost surely, 2^20337472 is an apocalyptic number.

It is an amenable number.

20337472 is a deficient number, since it is larger than the sum of its proper divisors (20019826).

20337472 is an equidigital number, since it uses as much as digits as its factorization.

20337472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317785 (or 317775 counting only the distinct ones).

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

The square root of 20337472 is about 4509.7086380386. The cubic root of 20337472 is about 272.9599873375.

It can be divided in two parts, 203 and 37472, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 20337472 in words is "twenty million, three hundred thirty-seven thousand, four hundred seventy-two".