33498990 has 48 divisors (see below), whose sum is σ = 99541728. Its totient is φ = 7656768.

The previous prime is 33498979. The next prime is 33498991. The reversal of 33498990 is 9989433.

It is a super-2 number, since 2×33498990² = 2244364662040200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33498991) 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, 25957 + ... + 27216.

It is an arithmetic number, because the mean of its divisors is an integer number (2073786).

Almost surely, 2^33498990 is an apocalyptic number.

33498990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33498990 is an abundant number, since it is smaller than the sum of its proper divisors (66042738).

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

33498990 is a wasteful number, since it uses less digits than its factorization.

33498990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53193 (or 53190 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 33498990 is about 5787.8312000265. The cubic root of 33498990 is about 322.3620466398.

The spelling of 33498990 in words is "thirty-three million, four hundred ninety-eight thousand, nine hundred ninety".