166026426 has 16 divisors (see below), whose sum is σ = 335341728. Its totient is φ = 54794000.

The previous prime is 166026409. The next prime is 166026433. The reversal of 166026426 is 624620661.

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, 136380 + ... + 137591.

It is an arithmetic number, because the mean of its divisors is an integer number (20958858).

Almost surely, 2^166026426 is an apocalyptic number.

166026426 is an abundant number, since it is smaller than the sum of its proper divisors (169315302).

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

166026426 is a wasteful number, since it uses less digits than its factorization.

166026426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274077.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 166026426 is about 12885.1242136038. The cubic root of 166026426 is about 549.6156278596.

The spelling of 166026426 in words is "one hundred sixty-six million, twenty-six thousand, four hundred twenty-six".