1426437220 has 48 divisors (see below), whose sum is σ = 3255603120. Its totient is φ = 521842176.

The previous prime is 1426437211. The next prime is 1426437269. The reversal of 1426437220 is 227346241.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 166464 + 1426270756 = 408^2 + 37766^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3174 + ... + 53506.

It is an arithmetic number, because the mean of its divisors is an integer number (67825065).

Almost surely, 2^1426437220 is an apocalyptic number.

1426437220 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 1426437220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627801560).

1426437220 is an abundant number, since it is smaller than the sum of its proper divisors (1829165900).

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

1426437220 is a wasteful number, since it uses less digits than its factorization.

1426437220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50464 (or 50462 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 1426437220 is about 37768.2038227925. The cubic root of 1426437220 is about 1125.6867497458.

The spelling of 1426437220 in words is "one billion, four hundred twenty-six million, four hundred thirty-seven thousand, two hundred twenty".