78174252 has 36 divisors (see below), whose sum is σ = 212808960. Its totient is φ = 24053472.

The previous prime is 78174251. The next prime is 78174259. The reversal of 78174252 is 25247187.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×78174252² = 12222427351519008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (78174251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83052 + ... + 83987.

It is an arithmetic number, because the mean of its divisors is an integer number (5911360).

Almost surely, 2^78174252 is an apocalyptic number.

It is an amenable number.

78174252 is an abundant number, since it is smaller than the sum of its proper divisors (134634708).

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

78174252 is a wasteful number, since it uses less digits than its factorization.

78174252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167062 (or 167057 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 78174252 is about 8841.6204397158. The cubic root of 78174252 is about 427.5838021822.

The spelling of 78174252 in words is "seventy-eight million, one hundred seventy-four thousand, two hundred fifty-two".