1481320840 has 64 divisors (see below), whose sum is σ = 3562185600. Its totient is φ = 552434688.

The previous prime is 1481320793. The next prime is 1481320859. The reversal of 1481320840 is 480231841.

It is a super-2 number, since 2×1481320840² = 4388622862036611200, which contains 22 as substring.

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, 62581 + ... + 82939.

It is an arithmetic number, because the mean of its divisors is an integer number (55659150).

Almost surely, 2^1481320840 is an apocalyptic number.

1481320840 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 1481320840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1781092800).

1481320840 is an abundant number, since it is smaller than the sum of its proper divisors (2080864760).

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

1481320840 is a wasteful number, since it uses less digits than its factorization.

1481320840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20494 (or 20490 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 1481320840 is about 38487.9310953447. The cubic root of 1481320840 is about 1139.9427590013.

It can be divided in two parts, 14813 and 20840, that added together give a palindrome (35653).

The spelling of 1481320840 in words is "one billion, four hundred eighty-one million, three hundred twenty thousand, eight hundred forty".