93978240 has 64 divisors (see below), whose sum is σ = 299561760. Its totient is φ = 25060352.

The previous prime is 93978211. The next prime is 93978251. The reversal of 93978240 is 4287939.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 93978192 and 93978201.

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, 22554 + ... + 26393.

Almost surely, 2^93978240 is an apocalyptic number.

It is an amenable number.

93978240 is an abundant number, since it is smaller than the sum of its proper divisors (205583520).

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

93978240 is a wasteful number, since it uses less digits than its factorization.

93978240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48969 (or 48957 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 93978240 is about 9694.2374635657. The cubic root of 93978240 is about 454.6485068650.

The spelling of 93978240 in words is "ninety-three million, nine hundred seventy-eight thousand, two hundred forty".