166402274 has 8 divisors (see below), whose sum is σ = 253119168. Its totient is φ = 82029220.

The previous prime is 166402237. The next prime is 166402277. The reversal of 166402274 is 472204661.

166402274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 166402274.

It is not an unprimeable number, because it can be changed into a prime (166402277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585782 + ... + 586065.

It is an arithmetic number, because the mean of its divisors is an integer number (31639896).

Almost surely, 2^166402274 is an apocalyptic number.

166402274 is a deficient number, since it is larger than the sum of its proper divisors (86716894).

166402274 is a wasteful number, since it uses less digits than its factorization.

166402274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171920.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 166402274 is about 12899.7005391598. The cubic root of 166402274 is about 550.0300523524.

The spelling of 166402274 in words is "one hundred sixty-six million, four hundred two thousand, two hundred seventy-four".