30443157 has 12 divisors (see below), whose sum is σ = 44029804. Its totient is φ = 20269440.

The previous prime is 30443143. The next prime is 30443177. The reversal of 30443157 is 75134403.

It can be written as a sum of positive squares in 2 ways, for example, as 23677956 + 6765201 = 4866^2 + 2601^2 .

It is not a de Polignac number, because 30443157 - 2⁶ = 30443093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30443157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30443137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7533 + ... + 10845.

Almost surely, 2^30443157 is an apocalyptic number.

It is an amenable number.

30443157 is a deficient number, since it is larger than the sum of its proper divisors (13586647).

30443157 is a wasteful number, since it uses less digits than its factorization.

30443157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4340 (or 4337 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 30443157 is about 5517.5317851373. The cubic root of 30443157 is about 312.2457691227.

The spelling of 30443157 in words is "thirty million, four hundred forty-three thousand, one hundred fifty-seven".