1520028 has 18 divisors (see below), whose sum is σ = 3842384. Its totient is φ = 506664.

The previous prime is 1520011. The next prime is 1520069. The reversal of 1520028 is 8200251.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 5 ways as a sum of consecutive naturals, for example, 21076 + ... + 21147.

2^1520028 is an apocalyptic number.

1520028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1520028 is an abundant number, since it is smaller than the sum of its proper divisors (2322356).

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

1520028 is a wasteful number, since it uses less digits than its factorization.

1520028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42233 (or 42228 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1520028 is about 1232.8941560410. The cubic root of 1520028 is about 114.9786475795.

Adding to 1520028 its reverse (8200251), we get a palindrome (9720279).

The spelling of 1520028 in words is "one million, five hundred twenty thousand, twenty-eight".