1427680840 has 128 divisors (see below), whose sum is σ = 3467059200. Its totient is φ = 527788800.

The previous prime is 1427680819. The next prime is 1427680873. The reversal of 1427680840 is 480867241.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1427680793 and 1427680802.

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 31 ways as a sum of consecutive naturals, for example, 5973441 + ... + 5973679.

It is an arithmetic number, because the mean of its divisors is an integer number (27086400).

Almost surely, 2^1427680840 is an apocalyptic number.

1427680840 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 1427680840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733529600).

1427680840 is an abundant number, since it is smaller than the sum of its proper divisors (2039378360).

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

1427680840 is a wasteful number, since it uses less digits than its factorization.

1427680840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 1427680840 is about 37784.6640847845. The cubic root of 1427680840 is about 1126.0137929780.

The spelling of 1427680840 in words is "one billion, four hundred twenty-seven million, six hundred eighty thousand, eight hundred forty".