33223390 has 16 divisors (see below), whose sum is σ = 60056640. Its totient is φ = 13232800.

The previous prime is 33223387. The next prime is 33223397. The reversal of 33223390 is 9332233.

It is a super-2 number, since 2×33223390² = 2207587286184200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33223397) 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, 4561 + ... + 9340.

It is an arithmetic number, because the mean of its divisors is an integer number (3753540).

Almost surely, 2^33223390 is an apocalyptic number.

33223390 is a deficient number, since it is larger than the sum of its proper divisors (26833250).

33223390 is a wasteful number, since it uses less digits than its factorization.

33223390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14147.

The product of its (nonzero) digits is 2916, while the sum is 25.

The square root of 33223390 is about 5763.9734558723. The cubic root of 33223390 is about 321.4755747371.

The spelling of 33223390 in words is "thirty-three million, two hundred twenty-three thousand, three hundred ninety".