33001398 has 16 divisors (see below), whose sum is σ = 73336560. Its totient is φ = 11000448.

The previous prime is 33001393. The next prime is 33001411. The reversal of 33001398 is 89310033.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33001393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305515 + ... + 305622.

It is an arithmetic number, because the mean of its divisors is an integer number (4583535).

Almost surely, 2^33001398 is an apocalyptic number.

33001398 is an abundant number, since it is smaller than the sum of its proper divisors (40335162).

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

33001398 is a wasteful number, since it uses less digits than its factorization.

33001398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611148 (or 611142 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 33001398 is about 5744.6843255309. The cubic root of 33001398 is about 320.7579623629.

The spelling of 33001398 in words is "thirty-three million, one thousand, three hundred ninety-eight".