33987464 has 16 divisors (see below), whose sum is σ = 72830400. Its totient is φ = 14566032.

The previous prime is 33987427. The next prime is 33987467. The reversal of 33987464 is 46478933.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (33987467) 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, 303404 + ... + 303515.

It is an arithmetic number, because the mean of its divisors is an integer number (4551900).

Almost surely, 2^33987464 is an apocalyptic number.

It is an amenable number.

33987464 is an abundant number, since it is smaller than the sum of its proper divisors (38842936).

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

33987464 is a wasteful number, since it uses less digits than its factorization.

33987464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606932 (or 606928 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 33987464 is about 5829.8768426100. The cubic root of 33987464 is about 323.9213597691.

The spelling of 33987464 in words is "thirty-three million, nine hundred eighty-seven thousand, four hundred sixty-four".