1426649280 has 224 divisors, whose sum is σ = 5288011776. Its totient is φ = 319082496.

The previous prime is 1426649269. The next prime is 1426649303. The reversal of 1426649280 is 829466241.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313582 + ... + 318098.

Almost surely, 2^1426649280 is an apocalyptic number.

1426649280 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 1426649280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2644005888).

1426649280 is an abundant number, since it is smaller than the sum of its proper divisors (3861362496).

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

1426649280 is a wasteful number, since it uses less digits than its factorization.

1426649280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591 (or 4581 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 1426649280 is about 37771.0111064028. The cubic root of 1426649280 is about 1125.7425300494.

It can be divided in two parts, 14266 and 49280, that added together give a triangular number (63546 = T₃₅₆).

The spelling of 1426649280 in words is "one billion, four hundred twenty-six million, six hundred forty-nine thousand, two hundred eighty".