1400224540 has 96 divisors (see below), whose sum is σ = 3493990080. Its totient is φ = 464640000.

The previous prime is 1400224453. The next prime is 1400224541. The reversal of 1400224540 is 454220041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400224541) 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, 251790 + ... + 257290.

It is an arithmetic number, because the mean of its divisors is an integer number (36395730).

Almost surely, 2^1400224540 is an apocalyptic number.

1400224540 is a gapful number since it is divisible by the number (10) 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 1400224540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1746995040).

1400224540 is an abundant number, since it is smaller than the sum of its proper divisors (2093765540).

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

1400224540 is a wasteful number, since it uses less digits than its factorization.

1400224540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5623 (or 5621 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1400224540 is about 37419.5742894010. The cubic root of 1400224540 is about 1118.7487461260.

Adding to 1400224540 its reverse (454220041), we get a palindrome (1854444581).

The spelling of 1400224540 in words is "one billion, four hundred million, two hundred twenty-four thousand, five hundred forty".