78654120 has 128 divisors (see below), whose sum is σ = 244944000. Its totient is φ = 20194304.

The previous prime is 78654109. The next prime is 78654131. The reversal of 78654120 is 2145687.

It is an interprime number because it is at equal distance from previous prime (78654109) and next prime (78654131).

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, 527806 + ... + 527954.

It is an arithmetic number, because the mean of its divisors is an integer number (1913625).

Almost surely, 2^78654120 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 78654120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122472000).

78654120 is an abundant number, since it is smaller than the sum of its proper divisors (166289880).

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

78654120 is a wasteful number, since it uses less digits than its factorization.

78654120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 78654120 is about 8868.7158033167. The cubic root of 78654120 is about 428.4569173426.

The spelling of 78654120 in words is "seventy-eight million, six hundred fifty-four thousand, one hundred twenty".