398170332 has 36 divisors (see below), whose sum is σ = 1150270576. Its totient is φ = 113762880.

The previous prime is 398170259. The next prime is 398170337. The reversal of 398170332 is 233071893.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×398170332² = 317079226569980448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398170337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 789769 + ... + 790272.

Almost surely, 2^398170332 is an apocalyptic number.

It is an amenable number.

398170332 is an abundant number, since it is smaller than the sum of its proper divisors (752100244).

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

398170332 is a wasteful number, since it uses less digits than its factorization.

398170332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580058 (or 1580053 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 398170332 is about 19954.2058724470. The cubic root of 398170332 is about 735.6811566911.

The spelling of 398170332 in words is "three hundred ninety-eight million, one hundred seventy thousand, three hundred thirty-two".