1456820 has 24 divisors (see below), whose sum is σ = 3193344. Its totient is φ = 557216.

The previous prime is 1456799. The next prime is 1456823. The reversal of 1456820 is 286541.

It is a self number, because there is not a number n which added to its sum of digits gives 1456820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1456823) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1124 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (133056).

2^1456820 is an apocalyptic number.

1456820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1456820 is an abundant number, since it is smaller than the sum of its proper divisors (1736524).

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

1456820 is a wasteful number, since it uses less digits than its factorization.

1456820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199 (or 3197 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1456820 is about 1206.9879866842. The cubic root of 1456820 is about 113.3622955585.

The spelling of 1456820 in words is "one million, four hundred fifty-six thousand, eight hundred twenty".