33972440 has 16 divisors (see below), whose sum is σ = 76438080. Its totient is φ = 13588960.

The previous prime is 33972413. The next prime is 33972469. The reversal of 33972440 is 4427933.

It is a junction number, because it is equal to n+sod(n) for n = 33972397 and 33972406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424616 + ... + 424695.

It is an arithmetic number, because the mean of its divisors is an integer number (4777380).

Almost surely, 2^33972440 is an apocalyptic number.

It is an amenable number.

33972440 is an abundant number, since it is smaller than the sum of its proper divisors (42465640).

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

33972440 is a wasteful number, since it uses less digits than its factorization.

33972440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849322 (or 849318 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 33972440 is about 5828.5881652421. The cubic root of 33972440 is about 323.8736234256.

The spelling of 33972440 in words is "thirty-three million, nine hundred seventy-two thousand, four hundred forty".