20407632 has 40 divisors (see below), whose sum is σ = 60252096. Its totient is φ = 5830656.

The previous prime is 20407631. The next prime is 20407637. The reversal of 20407632 is 23670402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20407631) 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, 30033 + ... + 30704.

Almost surely, 2^20407632 is an apocalyptic number.

It is an amenable number.

20407632 is an abundant number, since it is smaller than the sum of its proper divisors (39844464).

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

20407632 is a wasteful number, since it uses less digits than its factorization.

20407632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60755 (or 60749 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20407632 is about 4517.4807138493. The cubic root of 20407632 is about 273.2735119267.

The spelling of 20407632 in words is "twenty million, four hundred seven thousand, six hundred thirty-two".