40022712 has 24 divisors (see below), whose sum is σ = 108395040. Its totient is φ = 13340880.

The previous prime is 40022711. The next prime is 40022753. The reversal of 40022712 is 21722004.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40022711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277864 + ... + 278007.

It is an arithmetic number, because the mean of its divisors is an integer number (4516460).

Almost surely, 2^40022712 is an apocalyptic number.

It is an amenable number.

40022712 is an abundant number, since it is smaller than the sum of its proper divisors (68372328).

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

40022712 is a wasteful number, since it uses less digits than its factorization.

40022712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555883 (or 555876 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 40022712 is about 6326.3506067875. The cubic root of 40022712 is about 342.0599053778.

Adding to 40022712 its reverse (21722004), we get a palindrome (61744716).

The spelling of 40022712 in words is "forty million, twenty-two thousand, seven hundred twelve".