78237852 has 48 divisors (see below), whose sum is σ = 227603712. Its totient is φ = 20321280.

The previous prime is 78237851. The next prime is 78237883. The reversal of 78237852 is 25873287.

It is a super-2 number, since 2×78237852² = 12242322971147808, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78237851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41413 + ... + 43260.

It is an arithmetic number, because the mean of its divisors is an integer number (4741744).

Almost surely, 2^78237852 is an apocalyptic number.

It is an amenable number.

78237852 is an abundant number, since it is smaller than the sum of its proper divisors (149365860).

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

78237852 is a wasteful number, since it uses less digits than its factorization.

78237852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84698 (or 84696 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 78237852 is about 8845.2163342679. The cubic root of 78237852 is about 427.6997267893.

The spelling of 78237852 in words is "seventy-eight million, two hundred thirty-seven thousand, eight hundred fifty-two".