133626390 has 16 divisors (see below), whose sum is σ = 320703408. Its totient is φ = 35633696.

The previous prime is 133626377. The next prime is 133626401. The reversal of 133626390 is 93626331.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 2227077 + ... + 2227136.

It is an arithmetic number, because the mean of its divisors is an integer number (20043963).

Almost surely, 2^133626390 is an apocalyptic number.

133626390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133626390 is an abundant number, since it is smaller than the sum of its proper divisors (187077018).

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

133626390 is a wasteful number, since it uses less digits than its factorization.

133626390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454223.

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 133626390 is about 11559.6881445824. The cubic root of 133626390 is about 511.2469678584.

The spelling of 133626390 in words is "one hundred thirty-three million, six hundred twenty-six thousand, three hundred ninety".