78237996 has 48 divisors (see below), whose sum is σ = 191407104. Its totient is φ = 24825856.

The previous prime is 78237983. The next prime is 78238009. The reversal of 78237996 is 69973287.

It is an interprime number because it is at equal distance from previous prime (78237983) and next prime (78238009).

It is a super-2 number, since 2×78237996² = 12242368036192032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70381 + ... + 71483.

It is an arithmetic number, because the mean of its divisors is an integer number (3987648).

Almost surely, 2^78237996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78237996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95703552).

78237996 is an abundant number, since it is smaller than the sum of its proper divisors (113169108).

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

78237996 is a wasteful number, since it uses less digits than its factorization.

78237996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 1388 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 78237996 is about 8845.2244742573. The cubic root of 78237996 is about 427.6999891888.

The spelling of 78237996 in words is "seventy-eight million, two hundred thirty-seven thousand, nine hundred ninety-six".