32720480 has 48 divisors (see below), whose sum is σ = 83253744. Its totient is φ = 12080640.

The previous prime is 32720473. The next prime is 32720491. The reversal of 32720480 is 8402723.

It is a super-2 number, since 2×32720480² = 2141259622860800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 5786 + ... + 9945.

It is an arithmetic number, because the mean of its divisors is an integer number (1734453).

Almost surely, 2^32720480 is an apocalyptic number.

It is an amenable number.

32720480 is an abundant number, since it is smaller than the sum of its proper divisors (50533264).

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

32720480 is a wasteful number, since it uses less digits than its factorization.

32720480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15759 (or 15751 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 32720480 is about 5720.1818152922. The cubic root of 32720480 is about 319.8452376640.

The spelling of 32720480 in words is "thirty-two million, seven hundred twenty thousand, four hundred eighty".