1530890 has 8 divisors (see below), whose sum is σ = 2755620. Its totient is φ = 612352.

The previous prime is 1530871. The next prime is 1530911. The reversal of 1530890 is 980351.

It can be written as a sum of positive squares in 2 ways, for example, as 1510441 + 20449 = 1229^2 + 143^2 .

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

It is a Curzon number.

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, 76535 + ... + 76554.

2^1530890 is an apocalyptic number.

1530890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1530890 is a deficient number, since it is larger than the sum of its proper divisors (1224730).

1530890 is a wasteful number, since it uses less digits than its factorization.

1530890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153096.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1530890 is about 1237.2913965594. The cubic root of 1530890 is about 115.2518739020.

The spelling of 1530890 in words is "one million, five hundred thirty thousand, eight hundred ninety".