1400224520 has 64 divisors (see below), whose sum is σ = 3188160000. Its totient is φ = 553439488.

The previous prime is 1400224453. The next prime is 1400224541. The reversal of 1400224520 is 254220041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1400224492 and 1400224501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1423949 + ... + 1424931.

It is an arithmetic number, because the mean of its divisors is an integer number (49815000).

Almost surely, 2^1400224520 is an apocalyptic number.

1400224520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400224520 is an abundant number, since it is smaller than the sum of its proper divisors (1787935480).

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

1400224520 is a wasteful number, since it uses less digits than its factorization.

1400224520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1400224520 is about 37419.5740221612. The cubic root of 1400224520 is about 1118.7487407994.

Adding to 1400224520 its reverse (254220041), we get a palindrome (1654444561).

The spelling of 1400224520 in words is "one billion, four hundred million, two hundred twenty-four thousand, five hundred twenty".