20746372 has 12 divisors (see below), whose sum is σ = 36369676. Its totient is φ = 10355040.

The previous prime is 20746367. The next prime is 20746379. The reversal of 20746372 is 27364702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6728836 + 14017536 = 2594^2 + 3744^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20746379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1779 + ... + 6682.

Almost surely, 2^20746372 is an apocalyptic number.

It is an amenable number.

20746372 is a deficient number, since it is larger than the sum of its proper divisors (15623304).

20746372 is a wasteful number, since it uses less digits than its factorization.

20746372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9078 (or 9076 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 20746372 is about 4554.8185474286. The cubic root of 20746372 is about 274.7772168126. Note that the first 3 decimals are identical.

The spelling of 20746372 in words is "twenty million, seven hundred forty-six thousand, three hundred seventy-two".