40220286 has 8 divisors (see below), whose sum is σ = 80440584. Its totient is φ = 13406760.

The previous prime is 40220273. The next prime is 40220287. The reversal of 40220286 is 68202204.

It is a sphenic number, since it is the product of 3 distinct primes.

40220286 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40220287) 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, 3351685 + ... + 3351696.

It is an arithmetic number, because the mean of its divisors is an integer number (10055073).

Almost surely, 2^40220286 is an apocalyptic number.

40220286 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40220286 is a wasteful number, since it uses less digits than its factorization.

40220286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6703386.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 40220286 is about 6341.9465466054. The cubic root of 40220286 is about 342.6218466430.

The spelling of 40220286 in words is "forty million, two hundred twenty thousand, two hundred eighty-six".