40215224 has 32 divisors (see below), whose sum is σ = 89925120. Its totient is φ = 16485216.

The previous prime is 40215193. The next prime is 40215233. The reversal of 40215224 is 42251204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40215196 and 40215205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14324 + ... + 16899.

It is an arithmetic number, because the mean of its divisors is an integer number (2810160).

Almost surely, 2^40215224 is an apocalyptic number.

It is an amenable number.

40215224 is an abundant number, since it is smaller than the sum of its proper divisors (49709896).

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

40215224 is a wasteful number, since it uses less digits than its factorization.

40215224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31259 (or 31255 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40215224 is about 6341.5474452219. The cubic root of 40215224 is about 342.6074722669.

Adding to 40215224 its reverse (42251204), we get a palindrome (82466428).

The spelling of 40215224 in words is "forty million, two hundred fifteen thousand, two hundred twenty-four".