166457240 has 32 divisors (see below), whose sum is σ = 374896080. Its totient is φ = 66517632.

The previous prime is 166457237. The next prime is 166457261. The reversal of 166457240 is 42754661.

It is a self number, because there is not a number n which added to its sum of digits gives 166457240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80054 + ... + 82106.

Almost surely, 2^166457240 is an apocalyptic number.

166457240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166457240 is an abundant number, since it is smaller than the sum of its proper divisors (208438840).

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

166457240 is a wasteful number, since it uses less digits than its factorization.

166457240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091 (or 4087 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 166457240 is about 12901.8308778251. The cubic root of 166457240 is about 550.0906076619.

The spelling of 166457240 in words is "one hundred sixty-six million, four hundred fifty-seven thousand, two hundred forty".