32778740 has 24 divisors (see below), whose sum is σ = 70301952. Its totient is φ = 12832160.

The previous prime is 32778731. The next prime is 32778763. The reversal of 32778740 is 4787723.

It is a junction number, because it is equal to n+sod(n) for n = 32778694 and 32778703.

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, 16496 + ... + 18375.

It is an arithmetic number, because the mean of its divisors is an integer number (2929248).

Almost surely, 2^32778740 is an apocalyptic number.

It is an amenable number.

32778740 is an abundant number, since it is smaller than the sum of its proper divisors (37523212).

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

32778740 is a wasteful number, since it uses less digits than its factorization.

32778740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34927 (or 34925 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 32778740 is about 5725.2720459381. The cubic root of 32778740 is about 320.0349571186.

The spelling of 32778740 in words is "thirty-two million, seven hundred seventy-eight thousand, seven hundred forty".