33353940 has 48 divisors (see below), whose sum is σ = 94796352. Its totient is φ = 8760576.

The previous prime is 33353921. The next prime is 33353959. The reversal of 33353940 is 4935333.

It is an interprime number because it is at equal distance from previous prime (33353921) and next prime (33353959).

It is a super-2 number, since 2×33353940² = 2224970627047200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 33353898 and 33353907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129 + ... + 8168.

It is an arithmetic number, because the mean of its divisors is an integer number (1974924).

Almost surely, 2^33353940 is an apocalyptic number.

33353940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33353940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47398176).

33353940 is an abundant number, since it is smaller than the sum of its proper divisors (61442412).

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

33353940 is a wasteful number, since it uses less digits than its factorization.

33353940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8376 (or 8374 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 30.

The square root of 33353940 is about 5775.2870058552. The cubic root of 33353940 is about 321.8960996003.

The spelling of 33353940 in words is "thirty-three million, three hundred fifty-three thousand, nine hundred forty".