78427460 has 48 divisors (see below), whose sum is σ = 175271040. Its totient is φ = 29376000.

The previous prime is 78427451. The next prime is 78427463. The reversal of 78427460 is 6472487.

It is not an unprimeable number, because it can be changed into a prime (78427463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84881 + ... + 85799.

It is an arithmetic number, because the mean of its divisors is an integer number (3651480).

Almost surely, 2^78427460 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 78427460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87635520).

78427460 is an abundant number, since it is smaller than the sum of its proper divisors (96843580).

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

78427460 is a wasteful number, since it uses less digits than its factorization.

78427460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 78427460 is about 8855.9279581532. The cubic root of 78427460 is about 428.0449555364.

It can be divided in two parts, 78427 and 460, that added together give a palindrome (78887).

The spelling of 78427460 in words is "seventy-eight million, four hundred twenty-seven thousand, four hundred sixty".