40569472 has 32 divisors (see below), whose sum is σ = 81396000. Its totient is φ = 20140800.

The previous prime is 40569469. The next prime is 40569479. The reversal of 40569472 is 27496504.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (40569479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18279 + ... + 20377.

It is an arithmetic number, because the mean of its divisors is an integer number (2543625).

Almost surely, 2^40569472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40569472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40698000).

40569472 is an abundant number, since it is smaller than the sum of its proper divisors (40826528).

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

40569472 is a wasteful number, since it uses less digits than its factorization.

40569472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2252 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 40569472 is about 6369.4169277886. The cubic root of 40569472 is about 343.6105200735.

It can be divided in two parts, 40569 and 472, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 40569472 in words is "forty million, five hundred sixty-nine thousand, four hundred seventy-two".