30769056 has 72 divisors (see below), whose sum is σ = 92121120. Its totient is φ = 9714816.

The previous prime is 30769051. The next prime is 30769061. The reversal of 30769056 is 65096703.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30769051) and next prime (30769061).

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×30769056² = 1893469614262272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 30769056.

It is not an unprimeable number, because it can be changed into a prime (30769051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2661 + ... + 8283.

It is an arithmetic number, because the mean of its divisors is an integer number (1279460).

Almost surely, 2^30769056 is an apocalyptic number.

30769056 is a gapful number since it is divisible by the number (36) 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 30769056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46060560).

30769056 is an abundant number, since it is smaller than the sum of its proper divisors (61352064).

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

30769056 is a wasteful number, since it uses less digits than its factorization.

30769056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5658 (or 5647 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 30769056 is about 5546.9862087443. The cubic root of 30769056 is about 313.3560307485.

The spelling of 30769056 in words is "thirty million, seven hundred sixty-nine thousand, fifty-six".