33998388 has 12 divisors (see below), whose sum is σ = 79329600. Its totient is φ = 11332792.

The previous prime is 33998383. The next prime is 33998399. The reversal of 33998388 is 88389933.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 33998388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33998383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416588 + ... + 1416611.

It is an arithmetic number, because the mean of its divisors is an integer number (6610800).

Almost surely, 2^33998388 is an apocalyptic number.

It is an amenable number.

33998388 is an abundant number, since it is smaller than the sum of its proper divisors (45331212).

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

33998388 is a wasteful number, since it uses less digits than its factorization.

33998388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833206 (or 2833204 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 33998388 is about 5830.8136653472. The cubic root of 33998388 is about 323.9560601898.

The spelling of 33998388 in words is "thirty-three million, nine hundred ninety-eight thousand, three hundred eighty-eight".