166426038 has 24 divisors (see below), whose sum is σ = 360921600. Its totient is φ = 55424304.

The previous prime is 166426031. The next prime is 166426049. The reversal of 166426038 is 830624661.

166426038 is a `hidden beast` number, since 1 + 6 + 6 + 42 + 603 + 8 = 666.

It is a super-2 number, since 2×166426038² = 55395252248754888, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166425993 and 166426011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166426031) 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, 19408 + ... + 26636.

It is an arithmetic number, because the mean of its divisors is an integer number (15038400).

Almost surely, 2^166426038 is an apocalyptic number.

166426038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166426038 is an abundant number, since it is smaller than the sum of its proper divisors (194495562).

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

166426038 is a wasteful number, since it uses less digits than its factorization.

166426038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516 (or 8513 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 166426038 is about 12900.6216129301. The cubic root of 166426038 is about 550.0562344705.

The spelling of 166426038 in words is "one hundred sixty-six million, four hundred twenty-six thousand, thirty-eight".