172016946 has 40 divisors (see below), whose sum is σ = 386394624. Its totient is φ = 57197880.

The previous prime is 172016941. The next prime is 172016947. The reversal of 172016946 is 649610271.

It is a super-2 number, since 2×172016946² = 59179659422333832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172016946.

It is not an unprimeable number, because it can be changed into a prime (172016941) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 80431 + ... + 82541.

Almost surely, 2^172016946 is an apocalyptic number.

172016946 is an abundant number, since it is smaller than the sum of its proper divisors (214377678).

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

172016946 is a wasteful number, since it uses less digits than its factorization.

172016946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2619 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 172016946 is about 13115.5230928850. The cubic root of 172016946 is about 556.1480399578.

The spelling of 172016946 in words is "one hundred seventy-two million, sixteen thousand, nine hundred forty-six".