78252084 has 36 divisors (see below), whose sum is σ = 198456804. Its totient is φ = 25997952.

The previous prime is 78252059. The next prime is 78252101. The reversal of 78252084 is 48025287.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 76212900 = 1428^2 + 8730^2 .

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

It is a super-2 number, since 2×78252084² = 12246777300686112, which contains 22 as substring.

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

It is a congruent number.

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, 7984 + ... + 14840.

It is an arithmetic number, because the mean of its divisors is an integer number (5512689).

Almost surely, 2^78252084 is an apocalyptic number.

It is an amenable number.

78252084 is an abundant number, since it is smaller than the sum of its proper divisors (120204720).

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

78252084 is a wasteful number, since it uses less digits than its factorization.

78252084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7184 (or 7179 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 78252084 is about 8846.0208003373. The cubic root of 78252084 is about 427.7256590514.

The spelling of 78252084 in words is "seventy-eight million, two hundred fifty-two thousand, eighty-four".