1505428 has 12 divisors (see below), whose sum is σ = 2644180. Its totient is φ = 749952.

The previous prime is 1505417. The next prime is 1505431. The reversal of 1505428 is 8245051.

It can be written as a sum of positive squares in 2 ways, for example, as 636804 + 868624 = 798^2 + 932^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 988 + ... + 1996.

2^1505428 is an apocalyptic number.

It is an amenable number.

1505428 is a deficient number, since it is larger than the sum of its proper divisors (1138752).

1505428 is a wasteful number, since it uses less digits than its factorization.

1505428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1505428 is about 1226.9588420155. The cubic root of 1505428 is about 114.6093360124.

The spelling of 1505428 in words is "one million, five hundred five thousand, four hundred twenty-eight".