78877452 has 12 divisors (see below), whose sum is σ = 184047416. Its totient is φ = 26292480.

The previous prime is 78877441. The next prime is 78877459. The reversal of 78877452 is 25477887.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (78877459) 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, 3286549 + ... + 3286572.

Almost surely, 2^78877452 is an apocalyptic number.

It is an amenable number.

78877452 is an abundant number, since it is smaller than the sum of its proper divisors (105169964).

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

78877452 is a wasteful number, since it uses less digits than its factorization.

78877452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6573128 (or 6573126 counting only the distinct ones).

The product of its digits is 878080, while the sum is 48.

The square root of 78877452 is about 8881.2978781257. The cubic root of 78877452 is about 428.8620570294.

The spelling of 78877452 in words is "seventy-eight million, eight hundred seventy-seven thousand, four hundred fifty-two".