133244490 has 16 divisors (see below), whose sum is σ = 319786848. Its totient is φ = 35531856.

The previous prime is 133244443. The next prime is 133244509. The reversal of 133244490 is 94442331.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4441483 = 133244490 / (1 + 3 + 3 + 2 + 4 + 4 + 4 + 9 + 0).

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, 2220712 + ... + 2220771.

It is an arithmetic number, because the mean of its divisors is an integer number (19986678).

Almost surely, 2^133244490 is an apocalyptic number.

133244490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133244490 is an abundant number, since it is smaller than the sum of its proper divisors (186542358).

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

133244490 is a wasteful number, since it uses less digits than its factorization.

133244490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441493.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 133244490 is about 11543.1577135548. The cubic root of 133244490 is about 510.7594605767.

The spelling of 133244490 in words is "one hundred thirty-three million, two hundred forty-four thousand, four hundred ninety".