78240576 has 28 divisors (see below), whose sum is σ = 207012032. Its totient is φ = 26080128.

The previous prime is 78240529. The next prime is 78240577. The reversal of 78240576 is 67504287.

It is a super-2 number, since 2×78240576² = 12243175465623552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78240577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203560 + ... + 203943.

Almost surely, 2^78240576 is an apocalyptic number.

It is an amenable number.

78240576 is an abundant number, since it is smaller than the sum of its proper divisors (128771456).

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

78240576 is a wasteful number, since it uses less digits than its factorization.

78240576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407518 (or 407508 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 78240576 is about 8845.3703144639. The cubic root of 78240576 is about 427.7046904588.

The spelling of 78240576 in words is "seventy-eight million, two hundred forty thousand, five hundred seventy-six".