20740626 has 24 divisors (see below), whose sum is σ = 46488780. Its totient is φ = 6674976.

The previous prime is 20740589. The next prime is 20740631. The reversal of 20740626 is 62604702.

It can be written as a sum of positive squares in 2 ways, for example, as 19053225 + 1687401 = 4365^2 + 1299^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20740626.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19345 + ... + 20388.

Almost surely, 2^20740626 is an apocalyptic number.

20740626 is an abundant number, since it is smaller than the sum of its proper divisors (25748154).

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

20740626 is a wasteful number, since it uses less digits than its factorization.

20740626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39770 (or 39767 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20740626 is about 4554.1877431656. The cubic root of 20740626 is about 274.7518466632.

The spelling of 20740626 in words is "twenty million, seven hundred forty thousand, six hundred twenty-six".