398151216 has 30 divisors (see below), whose sum is σ = 1114270820. Its totient is φ = 132717024.

The previous prime is 398151163. The next prime is 398151217. The reversal of 398151216 is 612151893.

398151216 is a `hidden beast` number, since 398 + 1 + 51 + 216 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (398151217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1382326 + ... + 1382613.

Almost surely, 2^398151216 is an apocalyptic number.

398151216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

398151216 is an abundant number, since it is smaller than the sum of its proper divisors (716119604).

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

398151216 is a wasteful number, since it uses less digits than its factorization.

398151216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764953 (or 2764944 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 398151216 is about 19953.7268699359. The cubic root of 398151216 is about 735.6693832490.

The spelling of 398151216 in words is "three hundred ninety-eight million, one hundred fifty-one thousand, two hundred sixteen".