78281080 has 16 divisors (see below), whose sum is σ = 176132520. Its totient is φ = 31312416.

The previous prime is 78281069. The next prime is 78281101. The reversal of 78281080 is 8018287.

It is a super-2 number, since 2×78281080² = 12255854971932800, 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 3 ways as a sum of consecutive naturals, for example, 978474 + ... + 978553.

Almost surely, 2^78281080 is an apocalyptic number.

It is an amenable number.

78281080 is an abundant number, since it is smaller than the sum of its proper divisors (97851440).

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

78281080 is a wasteful number, since it uses less digits than its factorization.

78281080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957038 (or 1957034 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 78281080 is about 8847.6595775380. The cubic root of 78281080 is about 427.7784832107.

The spelling of 78281080 in words is "seventy-eight million, two hundred eighty-one thousand, eighty".