33890730 has 32 divisors (see below), whose sum is σ = 84875904. Its totient is φ = 8644416.

The previous prime is 33890729. The next prime is 33890767. The reversal of 33890730 is 3709833.

It is a super-2 number, since 2×33890730² = 2297163159865800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33890691 and 33890700.

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, 23869 + ... + 25248.

It is an arithmetic number, because the mean of its divisors is an integer number (2652372).

Almost surely, 2^33890730 is an apocalyptic number.

33890730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33890730 is an abundant number, since it is smaller than the sum of its proper divisors (50985174).

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

33890730 is a wasteful number, since it uses less digits than its factorization.

33890730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49150.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 33890730 is about 5821.5745292833. The cubic root of 33890730 is about 323.6137563208.

The spelling of 33890730 in words is "thirty-three million, eight hundred ninety thousand, seven hundred thirty".