30208193730 has 128 divisors (see below), whose sum is σ = 94638378240. Its totient is φ = 6759866880.

The previous prime is 30208193693. The next prime is 30208193731. The reversal of 30208193730 is 3739180203.

It is a happy number.

It is a super-2 number, since 2×30208193730² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30208193731) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 352587 + ... + 429806.

It is an arithmetic number, because the mean of its divisors is an integer number (739362330).

Almost surely, 2^30208193730 is an apocalyptic number.

30208193730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30208193730 is an abundant number, since it is smaller than the sum of its proper divisors (64430184510).

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

30208193730 is a wasteful number, since it uses less digits than its factorization.

30208193730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782433 (or 782427 counting only the distinct ones).

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

The spelling of 30208193730 in words is "thirty billion, two hundred eight million, one hundred ninety-three thousand, seven hundred thirty".