30669312 has 80 divisors (see below), whose sum is σ = 83869632. Its totient is φ = 9953280.

The previous prime is 30669307. The next prime is 30669319. The reversal of 30669312 is 21396603.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30669312.

It is not an unprimeable number, because it can be changed into a prime (30669319) 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, 62733 + ... + 63219.

Almost surely, 2^30669312 is an apocalyptic number.

30669312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30669312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41934816).

30669312 is an abundant number, since it is smaller than the sum of its proper divisors (53200320).

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

30669312 is an equidigital number, since it uses as much as digits as its factorization.

30669312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 30669312 is about 5537.9880823274. The cubic root of 30669312 is about 313.0170622906.

The spelling of 30669312 in words is "thirty million, six hundred sixty-nine thousand, three hundred twelve".