133021590 has 48 divisors (see below), whose sum is σ = 345711888. Its totient is φ = 32742528.

The previous prime is 133021571. The next prime is 133021591. The reversal of 133021590 is 95120331.

It is a happy number.

It is a super-2 number, since 2×133021590² = 35389486812256200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133021590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133021591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8049 + ... + 18188.

It is an arithmetic number, because the mean of its divisors is an integer number (7202331).

Almost surely, 2^133021590 is an apocalyptic number.

133021590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133021590 is an abundant number, since it is smaller than the sum of its proper divisors (212690298).

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

133021590 is a wasteful number, since it uses less digits than its factorization.

133021590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26273 (or 26260 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 133021590 is about 11533.4986018987. The cubic root of 133021590 is about 510.4744911267.

The spelling of 133021590 in words is "one hundred thirty-three million, twenty-one thousand, five hundred ninety".