172828446 has 32 divisors (see below), whose sum is σ = 415829760. Its totient is φ = 46780416.

The previous prime is 172828423. The next prime is 172828471. The reversal of 172828446 is 644828271.

172828446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 172828398 and 172828407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107491 + ... + 109086.

It is an arithmetic number, because the mean of its divisors is an integer number (12994680).

Almost surely, 2^172828446 is an apocalyptic number.

172828446 is an abundant number, since it is smaller than the sum of its proper divisors (243001314).

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

172828446 is a wasteful number, since it uses less digits than its factorization.

172828446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216608.

The product of its digits is 172032, while the sum is 42.

The square root of 172828446 is about 13146.4233158681. The cubic root of 172828446 is about 557.0212219297.

The spelling of 172828446 in words is "one hundred seventy-two million, eight hundred twenty-eight thousand, four hundred forty-six".