1374321280 has 64 divisors (see below), whose sum is σ = 3361960800. Its totient is φ = 536933376.

The previous prime is 1374321253. The next prime is 1374321283. The reversal of 1374321280 is 821234731.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (1374321283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2551 + ... + 52489.

Almost surely, 2^1374321280 is an apocalyptic number.

1374321280 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 1374321280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680980400).

1374321280 is an abundant number, since it is smaller than the sum of its proper divisors (1987639520).

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

1374321280 is an equidigital number, since it uses as much as digits as its factorization.

1374321280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50001 (or 49989 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1374321280 is about 37071.8394472138. The cubic root of 1374321280 is about 1111.8070503514.

The spelling of 1374321280 in words is "one billion, three hundred seventy-four million, three hundred twenty-one thousand, two hundred eighty".