40405722 has 16 divisors (see below), whose sum is σ = 92356032. Its totient is φ = 11544480.

The previous prime is 40405711. The next prime is 40405747. The reversal of 40405722 is 22750404.

It is a junction number, because it is equal to n+sod(n) for n = 40405692 and 40405701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480979 + ... + 481062.

It is an arithmetic number, because the mean of its divisors is an integer number (5772252).

Almost surely, 2^40405722 is an apocalyptic number.

40405722 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40405722 is an abundant number, since it is smaller than the sum of its proper divisors (51950310).

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

40405722 is a wasteful number, since it uses less digits than its factorization.

40405722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962053.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 40405722 is about 6356.5495357151. The cubic root of 40405722 is about 343.1475932117.

The spelling of 40405722 in words is "forty million, four hundred five thousand, seven hundred twenty-two".