33881945 has 8 divisors (see below), whose sum is σ = 40951680. Its totient is φ = 26910000.

The previous prime is 33881941. The next prime is 33881957. The reversal of 33881945 is 54918833.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33881945 - 2² = 33881941 is a prime.

It is a super-2 number, since 2×33881945² = 2295972393966050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33881941) 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, 23681 + ... + 25070.

It is an arithmetic number, because the mean of its divisors is an integer number (5118960).

Almost surely, 2^33881945 is an apocalyptic number.

It is an amenable number.

33881945 is a deficient number, since it is larger than the sum of its proper divisors (7069735).

33881945 is a wasteful number, since it uses less digits than its factorization.

33881945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48895.

The product of its digits is 103680, while the sum is 41.

The square root of 33881945 is about 5820.8199594215. The cubic root of 33881945 is about 323.5857920119.

The spelling of 33881945 in words is "thirty-three million, eight hundred eighty-one thousand, nine hundred forty-five".