33490530 has 64 divisors (see below), whose sum is σ = 93208320. Its totient is φ = 8540928.

The previous prime is 33490529. The next prime is 33490537. The reversal of 33490530 is 3509433.

It is a super-2 number, since 2×33490530² = 2243231199361800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 33490494 and 33490503.

It is not an unprimeable number, because it can be changed into a prime (33490537) 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, 3514 + ... + 8906.

It is an arithmetic number, because the mean of its divisors is an integer number (1456380).

Almost surely, 2^33490530 is an apocalyptic number.

33490530 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 33490530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46604160).

33490530 is an abundant number, since it is smaller than the sum of its proper divisors (59717790).

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

33490530 is a wasteful number, since it uses less digits than its factorization.

33490530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5432 (or 5426 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 33490530 is about 5787.1003101726. The cubic root of 33490530 is about 322.3349073885.

Adding to 33490530 its reverse (3509433), we get a palindrome (36999963).

The spelling of 33490530 in words is "thirty-three million, four hundred ninety thousand, five hundred thirty".