78370136 has 64 divisors (see below), whose sum is σ = 176450400. Its totient is φ = 32237568.

The previous prime is 78370121. The next prime is 78370141. The reversal of 78370136 is 63107387.

It is a super-2 number, since 2×78370136² = 12283756433316992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) 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 = 78370096 and 78370105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32426 + ... + 34758.

Almost surely, 2^78370136 is an apocalyptic number.

78370136 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78370136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88225200).

78370136 is an abundant number, since it is smaller than the sum of its proper divisors (98080264).

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

78370136 is a wasteful number, since it uses less digits than its factorization.

78370136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388 (or 2384 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 78370136 is about 8852.6908903451. The cubic root of 78370136 is about 427.9406416065.

The spelling of 78370136 in words is "seventy-eight million, three hundred seventy thousand, one hundred thirty-six".