33225390 has 144 divisors (see below), whose sum is σ = 99341424. Its totient is φ = 7983360.

The previous prime is 33225349. The next prime is 33225403. The reversal of 33225390 is 9352233.

It is a super-2 number, since 2×33225390² = 2207853081304200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 293974 + ... + 294086.

It is an arithmetic number, because the mean of its divisors is an integer number (689871).

Almost surely, 2^33225390 is an apocalyptic number.

33225390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 33225390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49670712).

33225390 is an abundant number, since it is smaller than the sum of its proper divisors (66116034).

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

33225390 is a wasteful number, since it uses less digits than its factorization.

33225390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 33225390 is about 5764.1469446918. The cubic root of 33225390 is about 321.4820253958.

The spelling of 33225390 in words is "thirty-three million, two hundred twenty-five thousand, three hundred ninety".