32530290 has 64 divisors (see below), whose sum is σ = 84672000. Its totient is φ = 7951104.

The previous prime is 32530279. The next prime is 32530321. The reversal of 32530290 is 9203523.

It is a self number, because there is not a number n which added to its sum of digits gives 32530290.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93036 + ... + 93384.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^32530290 is an apocalyptic number.

32530290 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 32530290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42336000).

32530290 is an abundant number, since it is smaller than the sum of its proper divisors (52141710).

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

32530290 is a wasteful number, since it uses less digits than its factorization.

32530290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 32530290 is about 5703.5331155346. The cubic root of 32530290 is about 319.2243257257.

The spelling of 32530290 in words is "thirty-two million, five hundred thirty thousand, two hundred ninety".