1426256390 has 32 divisors (see below), whose sum is σ = 2839475520. Its totient is φ = 512383104.

The previous prime is 1426256387. The next prime is 1426256423. The reversal of 1426256390 is 936526241.

It is a congruent number.

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, 143450 + ... + 153069.

It is an arithmetic number, because the mean of its divisors is an integer number (88733610).

Almost surely, 2^1426256390 is an apocalyptic number.

1426256390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1426256390 is a deficient number, since it is larger than the sum of its proper divisors (1413219130).

1426256390 is a wasteful number, since it uses less digits than its factorization.

1426256390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296576.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1426256390 is about 37765.8098019889. The cubic root of 1426256390 is about 1125.6391798202.

The spelling of 1426256390 in words is "one billion, four hundred twenty-six million, two hundred fifty-six thousand, three hundred ninety".