78701040 has 240 divisors, whose sum is σ = 304087680. Its totient is φ = 18040320.

The previous prime is 78701039. The next prime is 78701083. The reversal of 78701040 is 4010787.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 78700995 and 78701013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150219 + ... + 150741.

It is an arithmetic number, because the mean of its divisors is an integer number (1267032).

Almost surely, 2^78701040 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 78701040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152043840).

78701040 is an abundant number, since it is smaller than the sum of its proper divisors (225386640).

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

78701040 is a wasteful number, since it uses less digits than its factorization.

78701040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 78701040 is about 8871.3606622660. The cubic root of 78701040 is about 428.5420970402.

The spelling of 78701040 in words is "seventy-eight million, seven hundred one thousand, forty".