78260787 has 12 divisors (see below), whose sum is σ = 123320184. Its totient is φ = 47430720.

The previous prime is 78260779. The next prime is 78260803. The reversal of 78260787 is 78706287.

It is not a de Polignac number, because 78260787 - 2³ = 78260779 is a prime.

It is a super-2 number, since 2×78260787² = 12249501563718738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78260737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395158 + ... + 395355.

It is an arithmetic number, because the mean of its divisors is an integer number (10276682).

Almost surely, 2^78260787 is an apocalyptic number.

78260787 is a deficient number, since it is larger than the sum of its proper divisors (45059397).

78260787 is a wasteful number, since it uses less digits than its factorization.

78260787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790530 (or 790527 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 78260787 is about 8846.5127027547. The cubic root of 78260787 is about 427.7415153210.

The spelling of 78260787 in words is "seventy-eight million, two hundred sixty thousand, seven hundred eighty-seven".