1400234220 has 144 divisors (see below), whose sum is σ = 5295483648. Its totient is φ = 290954880.

The previous prime is 1400234201. The next prime is 1400234249. The reversal of 1400234220 is 224320041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1400234193 and 1400234202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36654 + ... + 64373.

It is an arithmetic number, because the mean of its divisors is an integer number (36774192).

Almost surely, 2^1400234220 is an apocalyptic number.

1400234220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400234220 is an abundant number, since it is smaller than the sum of its proper divisors (3895249428).

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

1400234220 is a wasteful number, since it uses less digits than its factorization.

1400234220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101060 (or 101055 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1400234220 is about 37419.7036332465. The cubic root of 1400234220 is about 1118.7513241560.

Adding to 1400234220 its reverse (224320041), we get a palindrome (1624554261).

The spelling of 1400234220 in words is "one billion, four hundred million, two hundred thirty-four thousand, two hundred twenty".