33981490 has 8 divisors (see below), whose sum is σ = 61166700. Its totient is φ = 13592592.

The previous prime is 33981461. The next prime is 33981491. The reversal of 33981490 is 9418933.

It can be written as a sum of positive squares in 2 ways, for example, as 33166081 + 815409 = 5759^2 + 903^2 .

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

It is not an unprimeable number, because it can be changed into a prime (33981491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699065 + ... + 1699084.

Almost surely, 2^33981490 is an apocalyptic number.

33981490 is a deficient number, since it is larger than the sum of its proper divisors (27185210).

33981490 is a wasteful number, since it uses less digits than its factorization.

33981490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398156.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 33981490 is about 5829.3644593558. The cubic root of 33981490 is about 323.9023800300.

The spelling of 33981490 in words is "thirty-three million, nine hundred eighty-one thousand, four hundred ninety".