32251040 has 96 divisors (see below), whose sum is σ = 82301184. Its totient is φ = 11898880.

The previous prime is 32251031. The next prime is 32251049. The reversal of 32251040 is 4015223.

It is a Cunningham number, because it is equal to 5679²-1.

It is an interprime number because it is at equal distance from previous prime (32251031) and next prime (32251049).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (32251049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193037 + ... + 193203.

It is an arithmetic number, because the mean of its divisors is an integer number (857304).

Almost surely, 2^32251040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32251040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41150592).

32251040 is an abundant number, since it is smaller than the sum of its proper divisors (50050144).

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

32251040 is a wasteful number, since it uses less digits than its factorization.

32251040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 32251040 is about 5678.9999119563. Note that the first 4 decimals coincide. The cubic root of 32251040 is about 318.3082595555.

Adding to 32251040 its reverse (4015223), we get a palindrome (36266263).

The spelling of 32251040 in words is "thirty-two million, two hundred fifty-one thousand, forty".