33485640 has 32 divisors (see below), whose sum is σ = 100457280. Its totient is φ = 8929472.

The previous prime is 33485593. The next prime is 33485663. The reversal of 33485640 is 4658433.

It is a super-2 number, since 2×33485640² = 2242576172419200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139404 + ... + 139643.

It is an arithmetic number, because the mean of its divisors is an integer number (3139290).

Almost surely, 2^33485640 is an apocalyptic number.

33485640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33485640 is an abundant number, since it is smaller than the sum of its proper divisors (66971640).

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

33485640 is a wasteful number, since it uses less digits than its factorization.

33485640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279061 (or 279057 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 33485640 is about 5786.6778033687. The cubic root of 33485640 is about 322.3192184319.

The spelling of 33485640 in words is "thirty-three million, four hundred eighty-five thousand, six hundred forty".