78274850 has 24 divisors (see below), whose sum is σ = 147014400. Its totient is φ = 31003920.

The previous prime is 78274837. The next prime is 78274879. The reversal of 78274850 is 5847287.

It is a super-2 number, since 2×78274850² = 12253904285045000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78274798 and 78274807.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2450 + ... + 12749.

It is an arithmetic number, because the mean of its divisors is an integer number (6125600).

Almost surely, 2^78274850 is an apocalyptic number.

78274850 is a deficient number, since it is larger than the sum of its proper divisors (68739550).

78274850 is a wasteful number, since it uses less digits than its factorization.

78274850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15314 (or 15309 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 78274850 is about 8847.3075000251. The cubic root of 78274850 is about 427.7671346590.

The spelling of 78274850 in words is "seventy-eight million, two hundred seventy-four thousand, eight hundred fifty".