78325407 has 16 divisors (see below), whose sum is σ = 116174080. Its totient is φ = 52155576.

The previous prime is 78325393. The next prime is 78325417. The reversal of 78325407 is 70452387.

It is not a de Polignac number, because 78325407 - 2⁷ = 78325279 is a prime.

It is a super-2 number, since 2×78325407² = 12269738763431298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78325417) 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, 43038 + ... + 44820.

It is an arithmetic number, because the mean of its divisors is an integer number (7260880).

Almost surely, 2^78325407 is an apocalyptic number.

78325407 is a deficient number, since it is larger than the sum of its proper divisors (37848673).

78325407 is a wasteful number, since it uses less digits than its factorization.

78325407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419 (or 3413 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 78325407 is about 8850.1642357642. The cubic root of 78325407 is about 427.8592117802.

The spelling of 78325407 in words is "seventy-eight million, three hundred twenty-five thousand, four hundred seven".