1452820 has 24 divisors (see below), whose sum is σ = 3231144. Its totient is φ = 546816.

The previous prime is 1452809. The next prime is 1452827. The reversal of 1452820 is 282541.

It can be written as a sum of positive squares in 4 ways, for example, as 171396 + 1281424 = 414^2 + 1132^2 .

It is a super-2 number, since 2×1452820² = 4221371904800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1452791 and 1452800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452827) 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, 1797 + ... + 2476.

It is an arithmetic number, because the mean of its divisors is an integer number (134631).

2^1452820 is an apocalyptic number.

1452820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1452820 is an abundant number, since it is smaller than the sum of its proper divisors (1778324).

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

1452820 is a wasteful number, since it uses less digits than its factorization.

1452820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299 (or 4297 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1452820 is about 1205.3298303784. The cubic root of 1452820 is about 113.2584472612.

The spelling of 1452820 in words is "one million, four hundred fifty-two thousand, eight hundred twenty".