78274 has 8 divisors (see below), whose sum is σ = 134208. Its totient is φ = 33540.

The previous prime is 78259. The next prime is 78277. The reversal of 78274 is 47287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78274² = 12253638152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2782 + ... + 2809.

It is an arithmetic number, because the mean of its divisors is an integer number (16776).

2⁷⁸²⁷⁴ is an apocalyptic number.

78274 is a deficient number, since it is larger than the sum of its proper divisors (55934).

78274 is a wasteful number, since it uses less digits than its factorization.

78274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600.

The product of its digits is 3136, while the sum is 28.

The square root of 78274 is about 279.7749095255. The cubic root of 78274 is about 42.7765586254.

It can be divided in two parts, 7 and 8274, that added together give a square (8281 = 91²).

The spelling of 78274 in words is "seventy-eight thousand, two hundred seventy-four".