78248630 has 16 divisors (see below), whose sum is σ = 142950960. Its totient is φ = 30832032.

The previous prime is 78248609. The next prime is 78248633. The reversal of 78248630 is 3684287.

It is a super-2 number, since 2×78248630² = 12245696193753800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78248633) 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, 57725 + ... + 59064.

It is an arithmetic number, because the mean of its divisors is an integer number (8934435).

Almost surely, 2^78248630 is an apocalyptic number.

78248630 is a deficient number, since it is larger than the sum of its proper divisors (64702330).

78248630 is a wasteful number, since it uses less digits than its factorization.

78248630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116863.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 78248630 is about 8845.8255691597. The cubic root of 78248630 is about 427.7193657742.

The spelling of 78248630 in words is "seventy-eight million, two hundred forty-eight thousand, six hundred thirty".