33422840 has 64 divisors (see below), whose sum is σ = 84296160. Its totient is φ = 11819520.

The previous prime is 33422827. The next prime is 33422849. The reversal of 33422840 is 4822433.

It is a super-2 number, since 2×33422840² = 2234172467331200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33422849) 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, 15254 + ... + 17306.

Almost surely, 2^33422840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33422840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42148080).

33422840 is an abundant number, since it is smaller than the sum of its proper divisors (50873320).

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

33422840 is a wasteful number, since it uses less digits than its factorization.

33422840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2108 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 33422840 is about 5781.2489999999. The cubic root of 33422840 is about 322.1175965421.

The spelling of 33422840 in words is "thirty-three million, four hundred twenty-two thousand, eight hundred forty".