33989870 has 8 divisors (see below), whose sum is σ = 61181784. Its totient is φ = 13595944.

The previous prime is 33989849. The next prime is 33989873. The reversal of 33989870 is 7898933.

33989870 = 3365² + 3366² + 3367².

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

It is a super-2 number, since 2×33989870² = 2310622525233800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33989873) 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, 1699484 + ... + 1699503.

It is an arithmetic number, because the mean of its divisors is an integer number (7647723).

Almost surely, 2^33989870 is an apocalyptic number.

33989870 is a deficient number, since it is larger than the sum of its proper divisors (27191914).

33989870 is a wasteful number, since it uses less digits than its factorization.

33989870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398994.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 33989870 is about 5830.0831898010. The cubic root of 33989870 is about 323.9290031402.

It can be divided in two parts, 339 and 89870, that added together give a palindrome (90209).

The spelling of 33989870 in words is "thirty-three million, nine hundred eighty-nine thousand, eight hundred seventy".