1426820 has 12 divisors (see below), whose sum is σ = 2996364. Its totient is φ = 570720.

The previous prime is 1426811. The next prime is 1426847. The reversal of 1426820 is 286241.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 1085764 = 584^2 + 1042^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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, 35651 + ... + 35690.

It is an arithmetic number, because the mean of its divisors is an integer number (249697).

2^1426820 is an apocalyptic number.

1426820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1426820 is an abundant number, since it is smaller than the sum of its proper divisors (1569544).

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

1426820 is a wasteful number, since it uses less digits than its factorization.

1426820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71350 (or 71348 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1426820 is about 1194.4957094942. The cubic root of 1426820 is about 112.5787432255.

The spelling of 1426820 in words is "one million, four hundred twenty-six thousand, eight hundred twenty".