166372140 has 48 divisors (see below), whose sum is σ = 508193280. Its totient is φ = 40332480.

The previous prime is 166372127. The next prime is 166372147. The reversal of 166372140 is 41273661.

166372140 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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 166372098 and 166372107.

It is not an unprimeable number, because it can be changed into a prime (166372147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125380 + ... + 126699.

It is an arithmetic number, because the mean of its divisors is an integer number (10587360).

Almost surely, 2^166372140 is an apocalyptic number.

166372140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166372140 is an abundant number, since it is smaller than the sum of its proper divisors (341821140).

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

166372140 is a wasteful number, since it uses less digits than its factorization.

166372140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252102 (or 252100 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 166372140 is about 12898.5324746655. The cubic root of 166372140 is about 549.9968484668.

The spelling of 166372140 in words is "one hundred sixty-six million, three hundred seventy-two thousand, one hundred forty".