30763216 has 40 divisors (see below), whose sum is σ = 65692224. Its totient is φ = 13839360.

The previous prime is 30763207. The next prime is 30763219. The reversal of 30763216 is 61236703.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30763219) 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, 17280 + ... + 18976.

Almost surely, 2^30763216 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 30763216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32846112).

30763216 is an abundant number, since it is smaller than the sum of its proper divisors (34929008).

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

30763216 is a wasteful number, since it uses less digits than its factorization.

30763216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30763216 is about 5546.4597717824. The cubic root of 30763216 is about 313.3362043900.

Adding to 30763216 its reverse (61236703), we get a palindrome (91999919).

The spelling of 30763216 in words is "thirty million, seven hundred sixty-three thousand, two hundred sixteen".