78611452 has 6 divisors (see below), whose sum is σ = 137570048. Its totient is φ = 39305724.

The previous prime is 78611441. The next prime is 78611453. The reversal of 78611452 is 25411687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78611453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9826428 + ... + 9826435.

Almost surely, 2^78611452 is an apocalyptic number.

It is an amenable number.

78611452 is a deficient number, since it is larger than the sum of its proper divisors (58958596).

78611452 is a wasteful number, since it uses less digits than its factorization.

78611452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19652867 (or 19652865 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 78611452 is about 8866.3099426988. The cubic root of 78611452 is about 428.3794274138.

The spelling of 78611452 in words is "seventy-eight million, six hundred eleven thousand, four hundred fifty-two".