166157400 has 48 divisors (see below), whose sum is σ = 515089800. Its totient is φ = 44308480.

The previous prime is 166157357. The next prime is 166157401. The reversal of 166157400 is 4751661.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166157401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137865 + ... + 139064.

Almost surely, 2^166157400 is an apocalyptic number.

166157400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166157400 is an abundant number, since it is smaller than the sum of its proper divisors (348932400).

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

166157400 is a wasteful number, since it uses less digits than its factorization.

166157400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276948 (or 276939 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 166157400 is about 12890.2055840859. The cubic root of 166157400 is about 549.7601157746.

The spelling of 166157400 in words is "one hundred sixty-six million, one hundred fifty-seven thousand, four hundred".