1426397684 has 12 divisors (see below), whose sum is σ = 2496965184. Its totient is φ = 712979064.

The previous prime is 1426397657. The next prime is 1426397723. The reversal of 1426397684 is 4867936241.

It is a super-2 number, since 2×1426397684² = 4069220705841127712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39884 + ... + 66659.

It is an arithmetic number, because the mean of its divisors is an integer number (208080432).

Almost surely, 2^1426397684 is an apocalyptic number.

It is an amenable number.

1426397684 is a deficient number, since it is larger than the sum of its proper divisors (1070567500).

1426397684 is a wasteful number, since it uses less digits than its factorization.

1426397684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109894 (or 109892 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 1426397684 is about 37767.6804159324. The cubic root of 1426397684 is about 1125.6763495772.

The spelling of 1426397684 in words is "one billion, four hundred twenty-six million, three hundred ninety-seven thousand, six hundred eighty-four".