40220187 has 32 divisors (see below), whose sum is σ = 63905280. Its totient is φ = 22014720.

The previous prime is 40220183. The next prime is 40220197. The reversal of 40220187 is 78102204.

It is not a de Polignac number, because 40220187 - 2² = 40220183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40220183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128343 + ... + 128655.

It is an arithmetic number, because the mean of its divisors is an integer number (1997040).

Almost surely, 2^40220187 is an apocalyptic number.

40220187 is a deficient number, since it is larger than the sum of its proper divisors (23685093).

40220187 is a wasteful number, since it uses less digits than its factorization.

40220187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 40220187 is about 6341.9387414260. The cubic root of 40220187 is about 342.6215655279.

The spelling of 40220187 in words is "forty million, two hundred twenty thousand, one hundred eighty-seven".