20746650 has 24 divisors (see below), whose sum is σ = 51452064. Its totient is φ = 5532400.

The previous prime is 20746639. The next prime is 20746709. The reversal of 20746650 is 5664702.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 69006 + ... + 69305.

It is an arithmetic number, because the mean of its divisors is an integer number (2143836).

Almost surely, 2^20746650 is an apocalyptic number.

20746650 is an abundant number, since it is smaller than the sum of its proper divisors (30705414).

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

20746650 is a wasteful number, since it uses less digits than its factorization.

20746650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138326 (or 138321 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 20746650 is about 4554.8490644587. The cubic root of 20746650 is about 274.7784441393.

The spelling of 20746650 in words is "twenty million, seven hundred forty-six thousand, six hundred fifty".