30517396 has 96 divisors (see below), whose sum is σ = 70560000. Its totient is φ = 11458944.

The previous prime is 30517393. The next prime is 30517447. The reversal of 30517396 is 69371503.

30517396 = 144² + 145² + ... + 455².

It is a super-2 number, since 2×30517396² = 1862622917241632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30517393) 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 31 ways as a sum of consecutive naturals, for example, 517215 + ... + 517273.

It is an arithmetic number, because the mean of its divisors is an integer number (735000).

Almost surely, 2^30517396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30517396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35280000).

30517396 is an abundant number, since it is smaller than the sum of its proper divisors (40042604).

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

30517396 is a wasteful number, since it uses less digits than its factorization.

30517396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 30517396 is about 5524.2552439220. The cubic root of 30517396 is about 312.4993783454.

Adding to 30517396 its reverse (69371503), we get a palindrome (99888899).

The spelling of 30517396 in words is "thirty million, five hundred seventeen thousand, three hundred ninety-six".