30798157 has 8 divisors (see below), whose sum is σ = 33217184. Its totient is φ = 28386288.

The previous prime is 30798149. The next prime is 30798161. The reversal of 30798157 is 75189703.

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 30798157 - 2³ = 30798149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30798137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10138 + ... + 12820.

It is an arithmetic number, because the mean of its divisors is an integer number (4152148).

Almost surely, 2^30798157 is an apocalyptic number.

It is an amenable number.

30798157 is a deficient number, since it is larger than the sum of its proper divisors (2419027).

30798157 is a wasteful number, since it uses less digits than its factorization.

30798157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 30798157 is about 5549.6087249463. The cubic root of 30798157 is about 313.4547890648.

It can be divided in two parts, 3079 and 8157, that added together give a square (11236 = 106²).

The spelling of 30798157 in words is "thirty million, seven hundred ninety-eight thousand, one hundred fifty-seven".