20746632 has 32 divisors (see below), whose sum is σ = 54597600. Its totient is φ = 6551424.

The previous prime is 20746631. The next prime is 20746639. The reversal of 20746632 is 23664702.

It is a self number, because there is not a number n which added to its sum of digits gives 20746632.

It is not an unprimeable number, because it can be changed into a prime (20746631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22293 + ... + 23204.

It is an arithmetic number, because the mean of its divisors is an integer number (1706175).

Almost surely, 2^20746632 is an apocalyptic number.

It is an amenable number.

20746632 is an abundant number, since it is smaller than the sum of its proper divisors (33850968).

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

20746632 is a wasteful number, since it uses less digits than its factorization.

20746632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45525 (or 45521 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 20746632 is about 4554.8470885421. The cubic root of 20746632 is about 274.7783646724.

The spelling of 20746632 in words is "twenty million, seven hundred forty-six thousand, six hundred thirty-two".