33440890 has 16 divisors (see below), whose sum is σ = 68792832. Its totient is φ = 11465424.

The previous prime is 33440867. The next prime is 33440899. The reversal of 33440890 is 9804433.

It is a super-2 number, since 2×33440890² = 2236586247984200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33440899) 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, 238794 + ... + 238933.

It is an arithmetic number, because the mean of its divisors is an integer number (4299552).

Almost surely, 2^33440890 is an apocalyptic number.

33440890 is an abundant number, since it is smaller than the sum of its proper divisors (35351942).

33440890 is a wasteful number, since it uses less digits than its factorization.

33440890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477741.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 33440890 is about 5782.8098706425. The cubic root of 33440890 is about 322.1755726275.

The spelling of 33440890 in words is "thirty-three million, four hundred forty thousand, eight hundred ninety".