1542728 has 32 divisors (see below), whose sum is σ = 3231360. Its totient is φ = 684480.

The previous prime is 1542727. The next prime is 1542811. The reversal of 1542728 is 8272451.

It is a self number, because there is not a number n which added to its sum of digits gives 1542728.

It is not an unprimeable number, because it can be changed into a prime (1542727) 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, 3950 + ... + 4322.

It is an arithmetic number, because the mean of its divisors is an integer number (100980).

2^1542728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1542728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615680).

1542728 is an abundant number, since it is smaller than the sum of its proper divisors (1688632).

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

1542728 is a wasteful number, since it uses less digits than its factorization.

1542728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 433 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 1542728 is about 1242.0660207896. The cubic root of 1542728 is about 115.5481830164.

It can be divided in two parts, 154 and 2728, that added together give a palindrome (2882).

The spelling of 1542728 in words is "one million, five hundred forty-two thousand, seven hundred twenty-eight".