30470158 has 4 divisors (see below), whose sum is σ = 45705240. Its totient is φ = 15235078.

The previous prime is 30470149. The next prime is 30470159. The reversal of 30470158 is 85107403.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30470159) 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 as a sum of consecutive naturals, namely, 7617538 + ... + 7617541.

It is an arithmetic number, because the mean of its divisors is an integer number (11426310).

Almost surely, 2^30470158 is an apocalyptic number.

30470158 is a deficient number, since it is larger than the sum of its proper divisors (15235082).

30470158 is a wasteful number, since it uses less digits than its factorization.

30470158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15235081.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30470158 is about 5519.9780796666. The cubic root of 30470158 is about 312.3380553978.

It can be divided in two parts, 30470 and 158, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 30470158 in words is "thirty million, four hundred seventy thousand, one hundred fifty-eight".