33130902 has 32 divisors (see below), whose sum is σ = 79022592. Its totient is φ = 9054144.

The previous prime is 33130901. The next prime is 33130907. The reversal of 33130902 is 20903133.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33130901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16183 + ... + 18114.

It is an arithmetic number, because the mean of its divisors is an integer number (2469456).

Almost surely, 2^33130902 is an apocalyptic number.

33130902 is an abundant number, since it is smaller than the sum of its proper divisors (45891690).

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

33130902 is a wasteful number, since it uses less digits than its factorization.

33130902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34332.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 33130902 is about 5755.9449267692. The cubic root of 33130902 is about 321.1769872477.

The spelling of 33130902 in words is "thirty-three million, one hundred thirty thousand, nine hundred two".