33961398 has 16 divisors (see below), whose sum is σ = 71497920. Its totient is φ = 10724616.

The previous prime is 33961397. The next prime is 33961471. The reversal of 33961398 is 89316933.

It is a super-2 number, since 2×33961398² = 2306753108228808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33961391) 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, 148840 + ... + 149067.

It is an arithmetic number, because the mean of its divisors is an integer number (4468620).

Almost surely, 2^33961398 is an apocalyptic number.

33961398 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

33961398 is an abundant number, since it is smaller than the sum of its proper divisors (37536522).

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

33961398 is a wasteful number, since it uses less digits than its factorization.

33961398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297931.

The product of its digits is 104976, while the sum is 42.

The square root of 33961398 is about 5827.6408605884. The cubic root of 33961398 is about 323.8385302728.

The spelling of 33961398 in words is "thirty-three million, nine hundred sixty-one thousand, three hundred ninety-eight".