30288715890 has 64 divisors (see below), whose sum is σ = 77047925760. Its totient is φ = 7594076160.

The previous prime is 30288715871. The next prime is 30288715903. The reversal of 30288715890 is 9851788203.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 475446 + ... + 535374.

It is an arithmetic number, because the mean of its divisors is an integer number (1203873840).

Almost surely, 2^30288715890 is an apocalyptic number.

30288715890 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 30288715890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38523962880).

30288715890 is an abundant number, since it is smaller than the sum of its proper divisors (46759209870).

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

30288715890 is a wasteful number, since it uses less digits than its factorization.

30288715890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60947.

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 30288715890 in words is "thirty billion, two hundred eighty-eight million, seven hundred fifteen thousand, eight hundred ninety".