166352720 has 40 divisors (see below), whose sum is σ = 387308544. Its totient is φ = 66448512.

The previous prime is 166352653. The next prime is 166352731. The reversal of 166352720 is 27253661.

166352720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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, 105377 + ... + 106943.

Almost surely, 2^166352720 is an apocalyptic number.

166352720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166352720 is an abundant number, since it is smaller than the sum of its proper divisors (220955824).

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

166352720 is a wasteful number, since it uses less digits than its factorization.

166352720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2901 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 166352720 is about 12897.7796538784. The cubic root of 166352720 is about 549.9754479398.

The spelling of 166352720 in words is "one hundred sixty-six million, three hundred fifty-two thousand, seven hundred twenty".