1530290 has 16 divisors (see below), whose sum is σ = 2777112. Its totient is φ = 607104.

The previous prime is 1530281. The next prime is 1530293. The reversal of 1530290 is 920351.

It can be written as a sum of positive squares in 4 ways, for example, as 885481 + 644809 = 941^2 + 803^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1530293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812 + ... + 1928.

2^1530290 is an apocalyptic number.

1530290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1530290 is a deficient number, since it is larger than the sum of its proper divisors (1246822).

1530290 is a wasteful number, since it uses less digits than its factorization.

1530290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261.

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

The square root of 1530290 is about 1237.0489076831. The cubic root of 1530290 is about 115.2368150886.

The spelling of 1530290 in words is "one million, five hundred thirty thousand, two hundred ninety".