40017572 has 72 divisors (see below), whose sum is σ = 87562944. Its totient is φ = 15660864.

The previous prime is 40017557. The next prime is 40017577. The reversal of 40017572 is 27571004.

It is not an unprimeable number, because it can be changed into a prime (40017577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373943 + ... + 374049.

It is an arithmetic number, because the mean of its divisors is an integer number (1216152).

Almost surely, 2^40017572 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 40017572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43781472).

40017572 is an abundant number, since it is smaller than the sum of its proper divisors (47545372).

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

40017572 is a wasteful number, since it uses less digits than its factorization.

40017572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 40017572 is about 6325.9443563787. The cubic root of 40017572 is about 342.0452614994.

Adding to 40017572 its reverse (27571004), we get a palindrome (67588576).

The spelling of 40017572 in words is "forty million, seventeen thousand, five hundred seventy-two".