78130548 has 48 divisors (see below), whose sum is σ = 203132160. Its totient is φ = 25970112.

The previous prime is 78130541. The next prime is 78130561. The reversal of 78130548 is 84503187.

78130548 is a `hidden beast` number, since 7 + 81 + 30 + 548 = 666.

It is a super-2 number, since 2×78130548² = 12208765061560608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78130541) 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, 48565 + ... + 50147.

It is an arithmetic number, because the mean of its divisors is an integer number (4231920).

Almost surely, 2^78130548 is an apocalyptic number.

It is an amenable number.

78130548 is an abundant number, since it is smaller than the sum of its proper divisors (125001612).

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

78130548 is a wasteful number, since it uses less digits than its factorization.

78130548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2045 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 78130548 is about 8839.1486015340. The cubic root of 78130548 is about 427.5041058393.

It can be divided in two parts, 781 and 30548, that added together give a square (31329 = 177²).

The spelling of 78130548 in words is "seventy-eight million, one hundred thirty thousand, five hundred forty-eight".