40360644 has 36 divisors (see below), whose sum is σ = 102246144. Its totient is φ = 13424112.

The previous prime is 40360643. The next prime is 40360679. The reversal of 40360644 is 44606304.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (40360643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20929 + ... + 22775.

Almost surely, 2^40360644 is an apocalyptic number.

It is an amenable number.

40360644 is an abundant number, since it is smaller than the sum of its proper divisors (61885500).

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

40360644 is a wasteful number, since it uses less digits than its factorization.

40360644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 40360644 is about 6353.0027546035. The cubic root of 40360644 is about 343.0199366789.

Adding to 40360644 its reverse (44606304), we get a palindrome (84966948).

The spelling of 40360644 in words is "forty million, three hundred sixty thousand, six hundred forty-four".