166250772 has 24 divisors (see below), whose sum is σ = 431020800. Its totient is φ = 55416888.

The previous prime is 166250767. The next prime is 166250809. The reversal of 166250772 is 277052661.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 769572 + ... + 769787.

It is an arithmetic number, because the mean of its divisors is an integer number (17959200).

Almost surely, 2^166250772 is an apocalyptic number.

166250772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166250772 is an abundant number, since it is smaller than the sum of its proper divisors (264770028).

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

166250772 is a wasteful number, since it uses less digits than its factorization.

166250772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539372 (or 1539364 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 166250772 is about 12893.8268950688. The cubic root of 166250772 is about 549.8630755569.

The spelling of 166250772 in words is "one hundred sixty-six million, two hundred fifty thousand, seven hundred seventy-two".