1400220020 has 24 divisors (see below), whose sum is σ = 2945764584. Its totient is φ = 559078016.

The previous prime is 1400219999. The next prime is 1400220023. The reversal of 1400220020 is 200220041.

It can be written as a sum of positive squares in 4 ways, for example, as 38019556 + 1362200464 = 6166^2 + 36908^2 .

It is a super-2 number, since 2×1400220020² = 3921232208817600800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1400219983 and 1400220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400220023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 51707 + ... + 73986.

It is an arithmetic number, because the mean of its divisors is an integer number (122740191).

Almost surely, 2^1400220020 is an apocalyptic number.

1400220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400220020 is an abundant number, since it is smaller than the sum of its proper divisors (1545544564).

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

1400220020 is a wasteful number, since it uses less digits than its factorization.

1400220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126259 (or 126257 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1400220020 is about 37419.5138931547. The cubic root of 1400220020 is about 1118.7475423310.

Adding to 1400220020 its reverse (200220041), we get a palindrome (1600440061).

The spelling of 1400220020 in words is "one billion, four hundred million, two hundred twenty thousand, twenty".