78001704 has 160 divisors (see below), whose sum is σ = 246723840. Its totient is φ = 22809600.

The previous prime is 78001697. The next prime is 78001709. The reversal of 78001704 is 40710087.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (78001709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 220792 + ... + 221144.

It is an arithmetic number, because the mean of its divisors is an integer number (1542024).

Almost surely, 2^78001704 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 78001704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123361920).

78001704 is an abundant number, since it is smaller than the sum of its proper divisors (168722136).

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

78001704 is a wasteful number, since it uses less digits than its factorization.

78001704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 400 counting only the distinct ones).

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

The square root of 78001704 is about 8831.8573358043. The cubic root of 78001704 is about 427.2689795191.

The spelling of 78001704 in words is "seventy-eight million, one thousand, seven hundred four".