30161902 has 8 divisors (see below), whose sum is σ = 45682416. Its totient is φ = 14934432.

The previous prime is 30161881. The next prime is 30161941. The reversal of 30161902 is 20916103.

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

It is a congruent 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, 73003 + ... + 73414.

It is an arithmetic number, because the mean of its divisors is an integer number (5710302).

Almost surely, 2^30161902 is an apocalyptic number.

30161902 is a deficient number, since it is larger than the sum of its proper divisors (15520514).

30161902 is a wasteful number, since it uses less digits than its factorization.

30161902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146522.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 30161902 is about 5491.9852512548. The cubic root of 30161902 is about 311.2812115816.

The spelling of 30161902 in words is "thirty million, one hundred sixty-one thousand, nine hundred two".