33396870 has 64 divisors (see below), whose sum is σ = 90881280. Its totient is φ = 7786368.

The previous prime is 33396863. The next prime is 33396871. The reversal of 33396870 is 7869333.

It is a super-2 number, since 2×33396870² = 2230701851593800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33396871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5157 + ... + 9663.

It is an arithmetic number, because the mean of its divisors is an integer number (1420020).

Almost surely, 2^33396870 is an apocalyptic number.

33396870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 33396870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45440640).

33396870 is an abundant number, since it is smaller than the sum of its proper divisors (57484410).

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

33396870 is a wasteful number, since it uses less digits than its factorization.

33396870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 33396870 is about 5779.0025090841. The cubic root of 33396870 is about 322.0341450102.

The spelling of 33396870 in words is "thirty-three million, three hundred ninety-six thousand, eight hundred seventy".