78454130 has 8 divisors (see below), whose sum is σ = 141217452. Its totient is φ = 31381648.

The previous prime is 78454091. The next prime is 78454141. The reversal of 78454130 is 3145487.

It can be written as a sum of positive squares in 2 ways, for example, as 75986089 + 2468041 = 8717^2 + 1571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3922697 + ... + 3922716.

Almost surely, 2^78454130 is an apocalyptic number.

78454130 is a deficient number, since it is larger than the sum of its proper divisors (62763322).

78454130 is a wasteful number, since it uses less digits than its factorization.

78454130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7845420.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 78454130 is about 8857.4336012188. The cubic root of 78454130 is about 428.0934702836.

The spelling of 78454130 in words is "seventy-eight million, four hundred fifty-four thousand, one hundred thirty".