2240138472 has 128 divisors (see below), whose sum is σ = 6611189760. Its totient is φ = 623589120.

The previous prime is 2240138359. The next prime is 2240138473. The reversal of 2240138472 is 2748310422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2240138473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 763873 + ... + 766799.

It is an arithmetic number, because the mean of its divisors is an integer number (51649920).

Almost surely, 2^2240138472 is an apocalyptic number.

2240138472 is a gapful number since it is divisible by the number (22) 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 2240138472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3305594880).

2240138472 is an abundant number, since it is smaller than the sum of its proper divisors (4371051288).

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

2240138472 is a wasteful number, since it uses less digits than its factorization.

2240138472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183 (or 3179 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 2240138472 is about 47330.1011196891. The cubic root of 2240138472 is about 1308.4534848945.

Adding to 2240138472 its reverse (2748310422), we get a palindrome (4988448894).

The spelling of 2240138472 in words is "two billion, two hundred forty million, one hundred thirty-eight thousand, four hundred seventy-two".