30158840 has 32 divisors (see below), whose sum is σ = 70200000. Its totient is φ = 11647104.

The previous prime is 30158839. The next prime is 30158851. The reversal of 30158840 is 4885103.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 11840 + ... + 14159.

It is an arithmetic number, because the mean of its divisors is an integer number (2193750).

Almost surely, 2^30158840 is an apocalyptic number.

It is an amenable number.

30158840 is an abundant number, since it is smaller than the sum of its proper divisors (40041160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30158840 is a wasteful number, since it uses less digits than its factorization.

30158840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26039 (or 26035 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 30158840 is about 5491.7064743120. The cubic root of 30158840 is about 311.2706775938.

The spelling of 30158840 in words is "thirty million, one hundred fifty-eight thousand, eight hundred forty".