78737250 has 64 divisors (see below), whose sum is σ = 197758080. Its totient is φ = 20865600.

The previous prime is 78737249. The next prime is 78737297. The reversal of 78737250 is 5273787.

It is a junction number, because it is equal to n+sod(n) for n = 78737199 and 78737208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207561 + ... + 207939.

It is an arithmetic number, because the mean of its divisors is an integer number (3089970).

Almost surely, 2^78737250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78737250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98879040).

78737250 is an abundant number, since it is smaller than the sum of its proper divisors (119020830).

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

78737250 is a wasteful number, since it uses less digits than its factorization.

78737250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 78737250 is about 8873.4012644532. The cubic root of 78737250 is about 428.6078104035.

It can be divided in two parts, 78737 and 250, that added together give a palindrome (78987).

The spelling of 78737250 in words is "seventy-eight million, seven hundred thirty-seven thousand, two hundred fifty".