1528280 has 32 divisors (see below), whose sum is σ = 3704400. Its totient is φ = 564096.

The previous prime is 1528259. The next prime is 1528291. The reversal of 1528280 is 828251.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950 + ... + 1989.

2^1528280 is an apocalyptic number.

1528280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1528280 is an abundant number, since it is smaller than the sum of its proper divisors (2176120).

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

1528280 is a wasteful number, since it uses less digits than its factorization.

1528280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963 (or 2959 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1528280 is about 1236.2362233813. The cubic root of 1528280 is about 115.1863393652.

The spelling of 1528280 in words is "one million, five hundred twenty-eight thousand, two hundred eighty".