40214220 has 24 divisors (see below), whose sum is σ = 112599984. Its totient is φ = 10723776.

The previous prime is 40214173. The next prime is 40214233. The reversal of 40214220 is 2241204.

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 40214220.

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, 335059 + ... + 335178.

It is an arithmetic number, because the mean of its divisors is an integer number (4691666).

Almost surely, 2^40214220 is an apocalyptic number.

It is an amenable number.

40214220 is an abundant number, since it is smaller than the sum of its proper divisors (72385764).

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

40214220 is a wasteful number, since it uses less digits than its factorization.

40214220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670249 (or 670247 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40214220 is about 6341.4682842383. The cubic root of 40214220 is about 342.6046211015.

Adding to 40214220 its reverse (2241204), we get a palindrome (42455424).

The spelling of 40214220 in words is "forty million, two hundred fourteen thousand, two hundred twenty".