40022250 has 128 divisors (see below), whose sum is σ = 109714176. Its totient is φ = 9676800.

The previous prime is 40022219. The next prime is 40022251. The reversal of 40022250 is 5222004.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40022251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 548214 + ... + 548286.

It is an arithmetic number, because the mean of its divisors is an integer number (857142).

Almost surely, 2^40022250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40022250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54857088).

40022250 is an abundant number, since it is smaller than the sum of its proper divisors (69691926).

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

40022250 is a wasteful number, since it uses less digits than its factorization.

40022250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 40022250 is about 6326.3140927399. The cubic root of 40022250 is about 342.0585891894.

Adding to 40022250 its reverse (5222004), we get a palindrome (45244254).

The spelling of 40022250 in words is "forty million, twenty-two thousand, two hundred fifty".