30280716 has 36 divisors (see below), whose sum is σ = 79380392. Its totient is φ = 10093248.

The previous prime is 30280703. The next prime is 30280721. The reversal of 30280716 is 61708203.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×30280716² = 1833843522945312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 30280716.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14605 + ... + 16548.

Almost surely, 2^30280716 is an apocalyptic number.

30280716 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30280716 is an abundant number, since it is smaller than the sum of its proper divisors (49099676).

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

30280716 is a wasteful number, since it uses less digits than its factorization.

30280716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31172 (or 31158 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 30280716 is about 5502.7916551510. The cubic root of 30280716 is about 311.6894098508.

Adding to 30280716 its reverse (61708203), we get a palindrome (91988919).

It can be divided in two parts, 302 and 80716, that added together give a palindrome (81018).

The spelling of 30280716 in words is "thirty million, two hundred eighty thousand, seven hundred sixteen".