32090040 has 128 divisors (see below), whose sum is σ = 109612800. Its totient is φ = 8346240.

The previous prime is 32090039. The next prime is 32090057. The reversal of 32090040 is 4009023.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 32089995 and 32090022.

It is a congruent number.

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, 46095 + ... + 46785.

It is an arithmetic number, because the mean of its divisors is an integer number (856350).

Almost surely, 2^32090040 is an apocalyptic number.

32090040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32090040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54806400).

32090040 is an abundant number, since it is smaller than the sum of its proper divisors (77522760).

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

32090040 is a wasteful number, since it uses less digits than its factorization.

32090040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 32090040 is about 5664.8071458788. The cubic root of 32090040 is about 317.7777015266. Note that the first 4 decimals are identical.

Adding to 32090040 its reverse (4009023), we get a palindrome (36099063).

The spelling of 32090040 in words is "thirty-two million, ninety thousand, forty".