33994540 has 12 divisors (see below), whose sum is σ = 71388576. Its totient is φ = 13597808.

The previous prime is 33994531. The next prime is 33994547. The reversal of 33994540 is 4549933.

It is a self number, because there is not a number n which added to its sum of digits gives 33994540.

It is not an unprimeable number, because it can be changed into a prime (33994547) 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, 849844 + ... + 849883.

It is an arithmetic number, because the mean of its divisors is an integer number (5949048).

Almost surely, 2^33994540 is an apocalyptic number.

It is an amenable number.

33994540 is an abundant number, since it is smaller than the sum of its proper divisors (37394036).

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

33994540 is a wasteful number, since it uses less digits than its factorization.

33994540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699736 (or 1699734 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 33994540 is about 5830.4836849099. The cubic root of 33994540 is about 323.9438377480.

The spelling of 33994540 in words is "thirty-three million, nine hundred ninety-four thousand, five hundred forty".