32400780 has 48 divisors (see below), whose sum is σ = 91069440. Its totient is φ = 8607168.

The previous prime is 32400773. The next prime is 32400791. The reversal of 32400780 is 8700423.

It is a self number, because there is not a number n which added to its sum of digits gives 32400780.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17541 + ... + 19299.

It is an arithmetic number, because the mean of its divisors is an integer number (1897280).

Almost surely, 2^32400780 is an apocalyptic number.

32400780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32400780 is an abundant number, since it is smaller than the sum of its proper divisors (58668660).

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

32400780 is a wasteful number, since it uses less digits than its factorization.

32400780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078 (or 2076 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 32400780 is about 5692.1683039067. The cubic root of 32400780 is about 318.8001289864.

The spelling of 32400780 in words is "thirty-two million, four hundred thousand, seven hundred eighty".