78298086 has 16 divisors (see below), whose sum is σ = 161996400. Its totient is φ = 25199328.

The previous prime is 78298067. The next prime is 78298093. The reversal of 78298086 is 68089287.

It is a happy number.

It is a super-2 number, since 2×78298086² = 12261180542526792, 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 7 ways as a sum of consecutive naturals, for example, 224821 + ... + 225168.

It is an arithmetic number, because the mean of its divisors is an integer number (10124775).

Almost surely, 2^78298086 is an apocalyptic number.

78298086 is an abundant number, since it is smaller than the sum of its proper divisors (83698314).

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

78298086 is a wasteful number, since it uses less digits than its factorization.

78298086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450023.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 78298086 is about 8848.6205704618. The cubic root of 78298086 is about 427.8094582311.

The spelling of 78298086 in words is "seventy-eight million, two hundred ninety-eight thousand, eighty-six".