40232220 has 48 divisors (see below), whose sum is σ = 128744448. Its totient is φ = 9195840.

The previous prime is 40232207. The next prime is 40232233. The reversal of 40232220 is 2223204.

40232220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40232207) and next prime (40232233).

It is a super-2 number, since 2×40232220² = 3237263052256800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40232220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47476 + ... + 48315.

It is an arithmetic number, because the mean of its divisors is an integer number (2682176).

Almost surely, 2^40232220 is an apocalyptic number.

It is an amenable number.

40232220 is an abundant number, since it is smaller than the sum of its proper divisors (88512228).

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

40232220 is a wasteful number, since it uses less digits than its factorization.

40232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95810 (or 95808 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40232220 is about 6342.8873551404. The cubic root of 40232220 is about 342.6557304131.

Adding to 40232220 its reverse (2223204), we get a palindrome (42455424).

The spelling of 40232220 in words is "forty million, two hundred thirty-two thousand, two hundred twenty".