1545720 has 64 divisors (see below), whose sum is σ = 5063040. Its totient is φ = 374400.

The previous prime is 1545703. The next prime is 1545743. The reversal of 1545720 is 275451.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (79110).

2^1545720 is an apocalyptic number.

1545720 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 1545720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2531520).

1545720 is an abundant number, since it is smaller than the sum of its proper divisors (3517320).

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

1545720 is a wasteful number, since it uses less digits than its factorization.

1545720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 1545720 is about 1243.2698822058. The cubic root of 1545720 is about 115.6228336580.

The spelling of 1545720 in words is "one million, five hundred forty-five thousand, seven hundred twenty".