78148860 has 48 divisors (see below), whose sum is σ = 219252096. Its totient is φ = 20798272.

The previous prime is 78148849. The next prime is 78148891. The reversal of 78148860 is 6884187.

It is a super-2 number, since 2×78148860² = 12214488638599200, which contains 22 as substring.

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, 40027 + ... + 41933.

It is an arithmetic number, because the mean of its divisors is an integer number (4567752).

Almost surely, 2^78148860 is an apocalyptic number.

It is an amenable number.

78148860 is an abundant number, since it is smaller than the sum of its proper divisors (141103236).

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

78148860 is a wasteful number, since it uses less digits than its factorization.

78148860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602 (or 2600 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 78148860 is about 8840.1843872173. The cubic root of 78148860 is about 427.5375022673.

The spelling of 78148860 in words is "seventy-eight million, one hundred forty-eight thousand, eight hundred sixty".