396178130 has 8 divisors (see below), whose sum is σ = 713120652. Its totient is φ = 158471248.

The previous prime is 396178091. The next prime is 396178141. The reversal of 396178130 is 31871693.

It can be written as a sum of positive squares in 2 ways, for example, as 373301041 + 22877089 = 19321^2 + 4783^2 .

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

It is a super-2 number, since 2×396178130² = 313914221380593800, which contains 22 as substring.

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, 19808897 + ... + 19808916.

Almost surely, 2^396178130 is an apocalyptic number.

396178130 is a deficient number, since it is larger than the sum of its proper divisors (316942522).

396178130 is a wasteful number, since it uses less digits than its factorization.

396178130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39617820.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 396178130 is about 19904.2239235796. The cubic root of 396178130 is about 734.4521377370.

The spelling of 396178130 in words is "three hundred ninety-six million, one hundred seventy-eight thousand, one hundred thirty".