40224492 has 144 divisors (see below), whose sum is σ = 132531840. Its totient is φ = 10432800.

The previous prime is 40224491. The next prime is 40224511. The reversal of 40224492 is 29442204.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40224491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57867 + ... + 58557.

It is an arithmetic number, because the mean of its divisors is an integer number (920360).

Almost surely, 2^40224492 is an apocalyptic number.

40224492 is a gapful number since it is divisible by the number (42) 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 40224492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66265920).

40224492 is an abundant number, since it is smaller than the sum of its proper divisors (92307348).

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

40224492 is a wasteful number, since it uses less digits than its factorization.

40224492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 40224492 is about 6342.2781395962. The cubic root of 40224492 is about 342.6337893499.

Adding to 40224492 its reverse (29442204), we get a palindrome (69666696).

The spelling of 40224492 in words is "forty million, two hundred twenty-four thousand, four hundred ninety-two".