993125640 has 64 divisors (see below), whose sum is σ = 3208564800. Its totient is φ = 244461312.

The previous prime is 993125629. The next prime is 993125647. The reversal of 993125640 is 46521399.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (993125647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316750 + ... + 319869.

It is an arithmetic number, because the mean of its divisors is an integer number (50133825).

Almost surely, 2^993125640 is an apocalyptic number.

It is an amenable number.

993125640 is an abundant number, since it is smaller than the sum of its proper divisors (2215439160).

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

993125640 is a wasteful number, since it uses less digits than its factorization.

993125640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636646 (or 636642 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 993125640 is about 31513.8959825662. The cubic root of 993125640 is about 997.7032757628.

The spelling of 993125640 in words is "nine hundred ninety-three million, one hundred twenty-five thousand, six hundred forty".