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30913068250 = 253313988783
BaseRepresentation
bin11100110010100011…
…111111110011011010
32221210101101120112201
4130302203333303122
51001302221141000
622111250200414
72143024513261
oct346243776332
987711346481
1030913068250
1112123691799
125ba888310a
132bb85b5a7c
1416d38075d8
15c0dd8796a
hex7328ffcda

30913068250 has 32 divisors (see below), whose sum is σ = 59736029184. Its totient is φ = 11966346000.

The previous prime is 30913068233. The next prime is 30913068253. The reversal of 30913068250 is 5286031903.

It is not an unprimeable number, because it can be changed into a prime (30913068253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1986642 + ... + 2002141.

It is an arithmetic number, because the mean of its divisors is an integer number (1866750912).

Almost surely, 230913068250 is an apocalyptic number.

30913068250 is a deficient number, since it is larger than the sum of its proper divisors (28822960934).

30913068250 is a wasteful number, since it uses less digits than its factorization.

30913068250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988831 (or 3988821 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 30913068250 in words is "thirty billion, nine hundred thirteen million, sixty-eight thousand, two hundred fifty".

Divisors: 1 2 5 10 25 31 50 62 125 155 250 310 775 1550 3875 7750 3988783 7977566 19943915 39887830 99719575 123652273 199439150 247304546 498597875 618261365 997195750 1236522730 3091306825 6182613650 15456534125 30913068250