30870890 has 8 divisors (see below), whose sum is σ = 55567620. Its totient is φ = 12348352.

The previous prime is 30870887. The next prime is 30870901. The reversal of 30870890 is 9807803.

It can be written as a sum of positive squares in 2 ways, for example, as 30658369 + 212521 = 5537^2 + 461^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30870890.

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, 1543535 + ... + 1543554.

Almost surely, 2^30870890 is an apocalyptic number.

30870890 is a deficient number, since it is larger than the sum of its proper divisors (24696730).

30870890 is a wasteful number, since it uses less digits than its factorization.

30870890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087096.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 30870890 is about 5556.1578451300. The cubic root of 30870890 is about 313.7013469316.

The spelling of 30870890 in words is "thirty million, eight hundred seventy thousand, eight hundred ninety".