32023290 has 64 divisors (see below), whose sum is σ = 83454336. Its totient is φ = 7817472.

The previous prime is 32023283. The next prime is 32023297. The reversal of 32023290 is 9232023.

It is an interprime number because it is at equal distance from previous prime (32023283) and next prime (32023297).

It is a super-2 number, since 2×32023290² = 2050982204848200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (32023297) 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, 60969 + ... + 61491.

It is an arithmetic number, because the mean of its divisors is an integer number (1303974).

Almost surely, 2^32023290 is an apocalyptic number.

32023290 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 32023290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41727168).

32023290 is an abundant number, since it is smaller than the sum of its proper divisors (51431046).

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

32023290 is a wasteful number, since it uses less digits than its factorization.

32023290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 32023290 is about 5658.9124396831. The cubic root of 32023290 is about 317.5572137372.

The spelling of 32023290 in words is "thirty-two million, twenty-three thousand, two hundred ninety".