78426480 has 160 divisors (see below), whose sum is σ = 270125568. Its totient is φ = 18662400.

The previous prime is 78426479. The next prime is 78426487. The reversal of 78426480 is 8462487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78426487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160797 + ... + 161283.

Almost surely, 2^78426480 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 78426480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135062784).

78426480 is an abundant number, since it is smaller than the sum of its proper divisors (191699088).

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

78426480 is a wasteful number, since it uses less digits than its factorization.

78426480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 78426480 is about 8855.8726278103. The cubic root of 78426480 is about 428.0431726328.

The spelling of 78426480 in words is "seventy-eight million, four hundred twenty-six thousand, four hundred eighty".