40000722 has 16 divisors (see below), whose sum is σ = 80308800. Its totient is φ = 13282352.

The previous prime is 40000721. The next prime is 40000729. The reversal of 40000722 is 22700004.

It is not an unprimeable number, because it can be changed into a prime (40000721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11097 + ... + 14252.

It is an arithmetic number, because the mean of its divisors is an integer number (5019300).

Almost surely, 2^40000722 is an apocalyptic number.

40000722 is an abundant number, since it is smaller than the sum of its proper divisors (40308078).

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

40000722 is a wasteful number, since it uses less digits than its factorization.

40000722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25617.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 40000722 is about 6324.6123991910. The cubic root of 40000722 is about 341.9972469940.

Adding to 40000722 its reverse (22700004), we get a palindrome (62700726).

The spelling of 40000722 in words is "forty million, seven hundred twenty-two", and thus it is an aban number.