33287961 has 16 divisors (see below), whose sum is σ = 50955264. Its totient is φ = 18935184.

The previous prime is 33287959. The next prime is 33287971. The reversal of 33287961 is 16978233.

It is not a de Polignac number, because 33287961 - 2¹ = 33287959 is a prime.

It is a super-2 number, since 2×33287961² = 2216176695075042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33287951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276 + ... + 8258.

It is an arithmetic number, because the mean of its divisors is an integer number (3184704).

Almost surely, 2^33287961 is an apocalyptic number.

It is an amenable number.

33287961 is a deficient number, since it is larger than the sum of its proper divisors (17667303).

33287961 is a wasteful number, since it uses less digits than its factorization.

33287961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220.

The product of its digits is 54432, while the sum is 39.

The square root of 33287961 is about 5769.5719945244. The cubic root of 33287961 is about 321.6837068777.

The spelling of 33287961 in words is "thirty-three million, two hundred eighty-seven thousand, nine hundred sixty-one".