30143906 has 8 divisors (see below), whose sum is σ = 48694044. Its totient is φ = 13912560.

The previous prime is 30143891. The next prime is 30143917. The reversal of 30143906 is 60934103.

It can be written as a sum of positive squares in 2 ways, for example, as 27133681 + 3010225 = 5209^2 + 1735^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 1159381 = 30143906 / (3 + 0 + 1 + 4 + 3 + 9 + 0 + 6).

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, 579665 + ... + 579716.

Almost surely, 2^30143906 is an apocalyptic number.

30143906 is a deficient number, since it is larger than the sum of its proper divisors (18550138).

30143906 is a wasteful number, since it uses less digits than its factorization.

30143906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159396.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 30143906 is about 5490.3466192946. The cubic root of 30143906 is about 311.2192909601.

The spelling of 30143906 in words is "thirty million, one hundred forty-three thousand, nine hundred six".