33220407 has 16 divisors (see below), whose sum is σ = 48867840. Its totient is φ = 19905600.

The previous prime is 33220393. The next prime is 33220423. The reversal of 33220407 is 70402233.

It is a happy number.

It is not a de Polignac number, because 33220407 - 2⁴ = 33220391 is a prime.

It is a super-2 number, since 2×33220407² = 2207190882491298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220507) 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, 2719 + ... + 8592.

It is an arithmetic number, because the mean of its divisors is an integer number (3054240).

Almost surely, 2^33220407 is an apocalyptic number.

33220407 is a deficient number, since it is larger than the sum of its proper divisors (15647433).

33220407 is a wasteful number, since it uses less digits than its factorization.

33220407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11414.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 33220407 is about 5763.7146875951. The cubic root of 33220407 is about 321.4659530986.

The spelling of 33220407 in words is "thirty-three million, two hundred twenty thousand, four hundred seven".