33220887 has 16 divisors (see below), whose sum is σ = 50813952. Its totient is φ = 18911520.

The previous prime is 33220883. The next prime is 33220909. The reversal of 33220887 is 78802233.

It is a happy number.

It is not a de Polignac number, because 33220887 - 2² = 33220883 is a prime.

It is a super-2 number, since 2×33220887² = 2207254666133538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220883) 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, 2962 + ... + 8672.

It is an arithmetic number, because the mean of its divisors is an integer number (3175872).

Almost surely, 2^33220887 is an apocalyptic number.

33220887 is a deficient number, since it is larger than the sum of its proper divisors (17593065).

33220887 is a wasteful number, since it uses less digits than its factorization.

33220887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5998.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 33220887 is about 5763.7563272574. The cubic root of 33220887 is about 321.4675013730.

The spelling of 33220887 in words is "thirty-three million, two hundred twenty thousand, eight hundred eighty-seven".