40028219 has 16 divisors (see below), whose sum is σ = 50409216. Its totient is φ = 30876000.

The previous prime is 40028213. The next prime is 40028291. The reversal of 40028219 is 91282004.

It is a cyclic number.

It is not a de Polignac number, because 40028219 - 2¹⁶ = 39962683 is a prime.

It is a super-2 number, since 2×40028219² = 3204516632623922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40028213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5204 + ... + 10350.

It is an arithmetic number, because the mean of its divisors is an integer number (3150576).

Almost surely, 2^40028219 is an apocalyptic number.

40028219 is a deficient number, since it is larger than the sum of its proper divisors (10380997).

40028219 is a wasteful number, since it uses less digits than its factorization.

40028219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5266.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 40028219 is about 6326.7858348454. The cubic root of 40028219 is about 342.0755934493.

It can be divided in two parts, 4002 and 8219, that added together give a palindrome (12221).

The spelling of 40028219 in words is "forty million, twenty-eight thousand, two hundred nineteen".