33490730 has 96 divisors (see below), whose sum is σ = 79056000. Its totient is φ = 9974016.

The previous prime is 33490693. The next prime is 33490747. The reversal of 33490730 is 3709433.

33490730 = T₁₃₃ + T₁₃₄ + ... + T₅₈₇.

It is a super-2 number, since 2×33490730² = 2243257991865800, which contains 22 as substring.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 33490693 and 33490702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224696 + ... + 224844.

It is an arithmetic number, because the mean of its divisors is an integer number (823500).

Almost surely, 2^33490730 is an apocalyptic number.

33490730 is an abundant number, since it is smaller than the sum of its proper divisors (45565270).

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

33490730 is a wasteful number, since it uses less digits than its factorization.

33490730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 29.

The square root of 33490730 is about 5787.1175899579. The cubic root of 33490730 is about 322.3355490311.

The spelling of 33490730 in words is "thirty-three million, four hundred ninety thousand, seven hundred thirty".