78673040 has 40 divisors (see below), whose sum is σ = 188821248. Its totient is φ = 30453120.

The previous prime is 78673003. The next prime is 78673051. The reversal of 78673040 is 4037687.

It is a tau number, because it is divible by the number of its divisors (40).

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, 13382 + ... + 18341.

Almost surely, 2^78673040 is an apocalyptic number.

It is an amenable number.

78673040 is an abundant number, since it is smaller than the sum of its proper divisors (110148208).

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

78673040 is a wasteful number, since it uses less digits than its factorization.

78673040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31767 (or 31761 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 78673040 is about 8869.7824099580. The cubic root of 78673040 is about 428.4912692409.

The spelling of 78673040 in words is "seventy-eight million, six hundred seventy-three thousand, forty".