40220000 has 60 divisors (see below), whose sum is σ = 98996436. Its totient is φ = 16080000.

The previous prime is 40219997. The next prime is 40220021. The reversal of 40220000 is 2204.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 40220000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18995 + ... + 21005.

Almost surely, 2^40220000 is an apocalyptic number.

40220000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49498218).

40220000 is an abundant number, since it is smaller than the sum of its proper divisors (58776436).

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

40220000 is an equidigital number, since it uses as much as digits as its factorization.

40220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 40220000 is about 6341.9239982832. The cubic root of 40220000 is about 342.6210345314.

Adding to 40220000 its reverse (2204), we get a palindrome (40222204).

It can be divided in two parts, 402 and 20000, that added together give a palindrome (20402).

The spelling of 40220000 in words is "forty million, two hundred twenty thousand".