78264130 has 32 divisors (see below), whose sum is σ = 161554176. Its totient is φ = 26741184.

The previous prime is 78264061. The next prime is 78264133. The reversal of 78264130 is 3146287.

It is a super-2 number, since 2×78264130² = 12250548089313800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78264092 and 78264101.

It is not an unprimeable number, because it can be changed into a prime (78264133) 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, 20427 + ... + 23953.

It is an arithmetic number, because the mean of its divisors is an integer number (5048568).

Almost surely, 2^78264130 is an apocalyptic number.

78264130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78264130 is an abundant number, since it is smaller than the sum of its proper divisors (83290046).

78264130 is a wasteful number, since it uses less digits than its factorization.

78264130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 78264130 is about 8846.7016452461. The cubic root of 78264130 is about 427.7476057254.

The spelling of 78264130 in words is "seventy-eight million, two hundred sixty-four thousand, one hundred thirty".