33894990 has 64 divisors (see below), whose sum is σ = 92344320. Its totient is φ = 8843040.

The previous prime is 33894989. The next prime is 33895003. The reversal of 33894990 is 9949833.

It is a super-2 number, since 2×33894990² = 2297740694200200, 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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11355 + ... + 14025.

It is an arithmetic number, because the mean of its divisors is an integer number (1442880).

Almost surely, 2^33894990 is an apocalyptic number.

33894990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 33894990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46172160).

33894990 is an abundant number, since it is smaller than the sum of its proper divisors (58449330).

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

33894990 is a wasteful number, since it uses less digits than its factorization.

33894990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734 (or 2728 counting only the distinct ones).

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

The square root of 33894990 is about 5821.9403981834. The cubic root of 33894990 is about 323.6273149630.

The spelling of 33894990 in words is "thirty-three million, eight hundred ninety-four thousand, nine hundred ninety".