33622421 has 8 divisors (see below), whose sum is σ = 38529024. Its totient is φ = 28741680.

The previous prime is 33622417. The next prime is 33622427. The reversal of 33622421 is 12422633.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33622421 - 2² = 33622417 is a prime.

It is a super-2 number, since 2×33622421² = 2260934387802482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33622427) 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, 3590 + ... + 8951.

It is an arithmetic number, because the mean of its divisors is an integer number (4816128).

Almost surely, 2^33622421 is an apocalyptic number.

It is an amenable number.

33622421 is a deficient number, since it is larger than the sum of its proper divisors (4906603).

33622421 is a wasteful number, since it uses less digits than its factorization.

33622421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12931.

The product of its digits is 1728, while the sum is 23.

The square root of 33622421 is about 5798.4843709369. The cubic root of 33622421 is about 322.7574884119.

It can be divided in two parts, 33622 and 421, that added together give a palindrome (34043).

The spelling of 33622421 in words is "thirty-three million, six hundred twenty-two thousand, four hundred twenty-one".