1146820 has 24 divisors (see below), whose sum is σ = 2550744. Its totient is φ = 431616.

The previous prime is 1146809. The next prime is 1146823. The reversal of 1146820 is 286411.

It can be written as a sum of positive squares in 4 ways, for example, as 602176 + 544644 = 776^2 + 738^2 .

It is a super-2 number, since 2×1146820² = 2630392224800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1146791 and 1146800.

It is not an unprimeable number, because it can be changed into a prime (1146823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347 + ... + 2026.

It is an arithmetic number, because the mean of its divisors is an integer number (106281).

2^1146820 is an apocalyptic number.

1146820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1146820 is an abundant number, since it is smaller than the sum of its proper divisors (1403924).

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

1146820 is a wasteful number, since it uses less digits than its factorization.

1146820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399 (or 3397 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1146820 is about 1070.8968204267. The cubic root of 1146820 is about 104.6722965224.

The spelling of 1146820 in words is "one million, one hundred forty-six thousand, eight hundred twenty".