1545728 has 20 divisors (see below), whose sum is σ = 3089460. Its totient is φ = 772608.

The previous prime is 1545703. The next prime is 1545743. The reversal of 1545728 is 8275451.

It is a super-3 number, since 3×1545728³ = 11079508033385005056, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1545694 and 1545703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (154473).

2^1545728 is an apocalyptic number.

It is an amenable number.

1545728 is a deficient number, since it is larger than the sum of its proper divisors (1543732).

1545728 is an frugal number, since it uses more digits than its factorization.

1545728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037 (or 3021 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 1545728 is about 1243.2730995240. The cubic root of 1545728 is about 115.6230331294.

The spelling of 1545728 in words is "one million, five hundred forty-five thousand, seven hundred twenty-eight".