30663890 has 16 divisors (see below), whose sum is σ = 56020032. Its totient is φ = 12082224.

The previous prime is 30663889. The next prime is 30663901. The reversal of 30663890 is 9836603.

It is a self number, because there is not a number n which added to its sum of digits gives 30663890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22214 + ... + 23553.

It is an arithmetic number, because the mean of its divisors is an integer number (3501252).

Almost surely, 2^30663890 is an apocalyptic number.

30663890 is a deficient number, since it is larger than the sum of its proper divisors (25356142).

30663890 is a wasteful number, since it uses less digits than its factorization.

30663890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45841.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 30663890 is about 5537.4985327312. The cubic root of 30663890 is about 312.9986152021.

The spelling of 30663890 in words is "thirty million, six hundred sixty-three thousand, eight hundred ninety".