40666572 has 36 divisors (see below), whose sum is σ = 103020736. Its totient is φ = 13525920.

The previous prime is 40666559. The next prime is 40666573. The reversal of 40666572 is 27566604.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40666573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20922 + ... + 22782.

Almost surely, 2^40666572 is an apocalyptic number.

It is an amenable number.

40666572 is an abundant number, since it is smaller than the sum of its proper divisors (62354164).

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

40666572 is a wasteful number, since it uses less digits than its factorization.

40666572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478 (or 2473 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 40666572 is about 6377.0347341064. The cubic root of 40666572 is about 343.8844370250.

The spelling of 40666572 in words is "forty million, six hundred sixty-six thousand, five hundred seventy-two".