78150730 has 16 divisors (see below), whose sum is σ = 160767360. Its totient is φ = 26794512.

The previous prime is 78150727. The next prime is 78150731. The reversal of 78150730 is 3705187.

It is a super-2 number, since 2×78150730² = 12215073199065800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78150692 and 78150701.

It is not an unprimeable number, because it can be changed into a prime (78150731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558150 + ... + 558289.

It is an arithmetic number, because the mean of its divisors is an integer number (10047960).

Almost surely, 2^78150730 is an apocalyptic number.

78150730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78150730 is an abundant number, since it is smaller than the sum of its proper divisors (82616630).

78150730 is a wasteful number, since it uses less digits than its factorization.

78150730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116453.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 78150730 is about 8840.2901536092. The cubic root of 78150730 is about 427.5409123778.

The spelling of 78150730 in words is "seventy-eight million, one hundred fifty thousand, seven hundred thirty".