1340621480 has 128 divisors (see below), whose sum is σ = 3368252160. Its totient is φ = 476160000.

The previous prime is 1340621473. The next prime is 1340621521. The reversal of 1340621480 is 841260431.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4310525 + ... + 4310835.

It is an arithmetic number, because the mean of its divisors is an integer number (26314470).

Almost surely, 2^1340621480 is an apocalyptic number.

1340621480 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 1340621480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684126080).

1340621480 is an abundant number, since it is smaller than the sum of its proper divisors (2027630680).

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

1340621480 is a wasteful number, since it uses less digits than its factorization.

1340621480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1340621480 is about 36614.4982213330. The cubic root of 1340621480 is about 1102.6441842612.

The spelling of 1340621480 in words is "one billion, three hundred forty million, six hundred twenty-one thousand, four hundred eighty".