20347432 has 32 divisors (see below), whose sum is σ = 43960320. Its totient is φ = 8648640.

The previous prime is 20347427. The next prime is 20347463. The reversal of 20347432 is 23474302.

It is a junction number, because it is equal to n+sod(n) for n = 20347397 and 20347406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5682 + ... + 8542.

It is an arithmetic number, because the mean of its divisors is an integer number (1373760).

Almost surely, 2^20347432 is an apocalyptic number.

It is an amenable number.

20347432 is an abundant number, since it is smaller than the sum of its proper divisors (23612888).

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

20347432 is a wasteful number, since it uses less digits than its factorization.

20347432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001 (or 2997 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 20347432 is about 4510.8127870706. The cubic root of 20347432 is about 273.0045395444.

The spelling of 20347432 in words is "twenty million, three hundred forty-seven thousand, four hundred thirty-two".