30069312 has 112 divisors (see below), whose sum is σ = 97974912. Its totient is φ = 7925760.

The previous prime is 30069301. The next prime is 30069313. The reversal of 30069312 is 21396003.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (30069313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16612 + ... + 18332.

It is an arithmetic number, because the mean of its divisors is an integer number (874776).

Almost surely, 2^30069312 is an apocalyptic number.

30069312 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 30069312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48987456).

30069312 is an abundant number, since it is smaller than the sum of its proper divisors (67905600).

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

30069312 is a wasteful number, since it uses less digits than its factorization.

30069312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 30069312 is about 5483.5492156084. The cubic root of 30069312 is about 310.9623648727.

It can be divided in two parts, 30069 and 312, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 30069312 in words is "thirty million, sixty-nine thousand, three hundred twelve".