166926720 has 128 divisors (see below), whose sum is σ = 535818240. Its totient is φ = 44201984.

The previous prime is 166926719. The next prime is 166926769. The reversal of 166926720 is 27629661.

It is a tau number, because it is divible by the number of its divisors (128).

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, 435649 + ... + 436031.

It is an arithmetic number, because the mean of its divisors is an integer number (4186080).

Almost surely, 2^166926720 is an apocalyptic number.

166926720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166926720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267909120).

166926720 is an abundant number, since it is smaller than the sum of its proper divisors (368891520).

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

166926720 is a wasteful number, since it uses less digits than its factorization.

166926720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 166926720 is about 12920.0123838950. The cubic root of 166926720 is about 550.6072851393.

The spelling of 166926720 in words is "one hundred sixty-six million, nine hundred twenty-six thousand, seven hundred twenty".