40325660 has 48 divisors (see below), whose sum is σ = 88270560. Its totient is φ = 15456000.

The previous prime is 40325651. The next prime is 40325729. The reversal of 40325660 is 6652304.

40325660 = 296² + 297² + ... + 527².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145442 + ... + 145718.

It is an arithmetic number, because the mean of its divisors is an integer number (1838970).

Almost surely, 2^40325660 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 40325660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44135280).

40325660 is an abundant number, since it is smaller than the sum of its proper divisors (47944900).

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

40325660 is a wasteful number, since it uses less digits than its factorization.

40325660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 40325660 is about 6350.2488140230. The cubic root of 40325660 is about 342.9207998536.

Adding to 40325660 its reverse (6652304), we get a palindrome (46977964).

The spelling of 40325660 in words is "forty million, three hundred twenty-five thousand, six hundred sixty".