1520830 has 8 divisors (see below), whose sum is σ = 2737512. Its totient is φ = 608328.

The previous prime is 1520821. The next prime is 1520851. The reversal of 1520830 is 380251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1520798 and 1520807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76032 + ... + 76051.

It is an arithmetic number, because the mean of its divisors is an integer number (342189).

2^1520830 is an apocalyptic number.

1520830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1520830 is a deficient number, since it is larger than the sum of its proper divisors (1216682).

1520830 is a wasteful number, since it uses less digits than its factorization.

1520830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152090.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1520830 is about 1233.2193641036. The cubic root of 1520830 is about 114.9988657733.

The spelling of 1520830 in words is "one million, five hundred twenty thousand, eight hundred thirty".