30486157 has 8 divisors (see below), whose sum is σ = 33123384. Its totient is φ = 27890688.

The previous prime is 30486121. The next prime is 30486161. The reversal of 30486157 is 75168403.

It can be written as a sum of positive squares in 4 ways, for example, as 1552516 + 28933641 = 1246^2 + 5379^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30486157 - 2¹¹ = 30484109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30486167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8908 + ... + 11845.

It is an arithmetic number, because the mean of its divisors is an integer number (4140423).

Almost surely, 2^30486157 is an apocalyptic number.

It is an amenable number.

30486157 is a deficient number, since it is larger than the sum of its proper divisors (2637227).

30486157 is a wasteful number, since it uses less digits than its factorization.

30486157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20879.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 30486157 is about 5521.4270800220. The cubic root of 30486157 is about 312.3927123969.

The spelling of 30486157 in words is "thirty million, four hundred eighty-six thousand, one hundred fifty-seven".