30545402250 has 128 divisors (see below), whose sum is σ = 87550295040. Its totient is φ = 7015176000.

The previous prime is 30545402197. The next prime is 30545402311. The reversal of 30545402250 is 5220454503.

It is a super-2 number, since 2×30545402250² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59317 + ... + 254183.

It is an arithmetic number, because the mean of its divisors is an integer number (683986680).

Almost surely, 2^30545402250 is an apocalyptic number.

30545402250 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 30545402250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43775147520).

30545402250 is an abundant number, since it is smaller than the sum of its proper divisors (57004892790).

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

30545402250 is a wasteful number, since it uses less digits than its factorization.

30545402250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194917 (or 194907 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 30545402250 its reverse (5220454503), we get a palindrome (35765856753).

The spelling of 30545402250 in words is "thirty billion, five hundred forty-five million, four hundred two thousand, two hundred fifty".