30769830 has 216 divisors, whose sum is σ = 105170832. Its totient is φ = 6110208.

The previous prime is 30769807. The next prime is 30769831. The reversal of 30769830 is 3896703.

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 (30769831) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1809982 + ... + 1809998.

It is an arithmetic number, because the mean of its divisors is an integer number (486902).

Almost surely, 2^30769830 is an apocalyptic number.

30769830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30769830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52585416).

30769830 is an abundant number, since it is smaller than the sum of its proper divisors (74401002).

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

30769830 is a wasteful number, since it uses less digits than its factorization.

30769830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 30769830 is about 5547.0559759209. The cubic root of 30769830 is about 313.3586582317.

The spelling of 30769830 in words is "thirty million, seven hundred sixty-nine thousand, eight hundred thirty".