1530920 has 16 divisors (see below), whose sum is σ = 3444660. Its totient is φ = 612352.

The previous prime is 1530913. The next prime is 1530937. The reversal of 1530920 is 290351.

It can be written as a sum of positive squares in 2 ways, for example, as 1493284 + 37636 = 1222^2 + 194^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1530892 and 1530901.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19097 + ... + 19176.

2^1530920 is an apocalyptic number.

1530920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1530920 is an abundant number, since it is smaller than the sum of its proper divisors (1913740).

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

1530920 is a wasteful number, since it uses less digits than its factorization.

1530920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38284 (or 38280 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1530920 is about 1237.3035197558. The cubic root of 1530920 is about 115.2526267394.

The spelling of 1530920 in words is "one million, five hundred thirty thousand, nine hundred twenty".