40002672 has 20 divisors (see below), whose sum is σ = 103340360. Its totient is φ = 13334208.

The previous prime is 40002659. The next prime is 40002689. The reversal of 40002672 is 27620004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416647 + ... + 416742.

It is an arithmetic number, because the mean of its divisors is an integer number (5167018).

Almost surely, 2^40002672 is an apocalyptic number.

It is an amenable number.

40002672 is an abundant number, since it is smaller than the sum of its proper divisors (63337688).

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

40002672 is a wasteful number, since it uses less digits than its factorization.

40002672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833400 (or 833394 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 40002672 is about 6324.7665569569. The cubic root of 40002672 is about 342.0028042587.

Adding to 40002672 its reverse (27620004), we get a palindrome (67622676).

The spelling of 40002672 in words is "forty million, two thousand, six hundred seventy-two".