33421956 has 24 divisors (see below), whose sum is σ = 78207360. Its totient is φ = 11108832.

The previous prime is 33421943. The next prime is 33421957. The reversal of 33421956 is 65912433.

It is a super-2 number, since 2×33421956² = 2234054285731872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33421957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610 + ... + 8198.

It is an arithmetic number, because the mean of its divisors is an integer number (3258640).

Almost surely, 2^33421956 is an apocalyptic number.

It is an amenable number.

33421956 is an abundant number, since it is smaller than the sum of its proper divisors (44785404).

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

33421956 is a wasteful number, since it uses less digits than its factorization.

33421956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7963 (or 7961 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 33421956 is about 5781.1725454271. The cubic root of 33421956 is about 322.1147566232.

The spelling of 33421956 in words is "thirty-three million, four hundred twenty-one thousand, nine hundred fifty-six".