78596406 has 128 divisors (see below), whose sum is σ = 215377920. Its totient is φ = 20995200.

The previous prime is 78596393. The next prime is 78596411. The reversal of 78596406 is 60469587.

It is a super-2 number, since 2×78596406² = 12354790072233672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 520431 + ... + 520581.

It is an arithmetic number, because the mean of its divisors is an integer number (1682640).

Almost surely, 2^78596406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78596406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107688960).

78596406 is an abundant number, since it is smaller than the sum of its proper divisors (136781514).

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

78596406 is a wasteful number, since it uses less digits than its factorization.

78596406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 78596406 is about 8865.4614093120. The cubic root of 78596406 is about 428.3520954838.

The spelling of 78596406 in words is "seventy-eight million, five hundred ninety-six thousand, four hundred six".