1546820 has 48 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 549120.

The previous prime is 1546799. The next prime is 1546823. The reversal of 1546820 is 286451.

It is a super-2 number, since 2×1546820² = 4785304224800, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1546820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1546823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17336 + ... + 17424.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2^1546820 is an apocalyptic number.

1546820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1546820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1546820 is an abundant number, since it is smaller than the sum of its proper divisors (2081980).

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

1546820 is a wasteful number, since it uses less digits than its factorization.

1546820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 186 counting only the distinct ones).

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

The square root of 1546820 is about 1243.7121853548. The cubic root of 1546820 is about 115.6502545274.

The spelling of 1546820 in words is "one million, five hundred forty-six thousand, eight hundred twenty".