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30698709884 = 2231247570241
BaseRepresentation
bin11100100101110010…
…010010001101111100
32221020110001001010222
4130211302102031330
51000332332204014
622034111520512
72134512504623
oct344562221574
987213031128
1030698709884
1112023692117
125b48b29138
132b830721bb
1416b31686ba
15bea14408e
hex725c9237c

30698709884 has 12 divisors (see below), whose sum is σ = 55455734208. Its totient is φ = 14854214400.

The previous prime is 30698709841. The next prime is 30698709893. The reversal of 30698709884 is 48890789603.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123784997 + ... + 123785244.

It is an arithmetic number, because the mean of its divisors is an integer number (4621311184).

Almost surely, 230698709884 is an apocalyptic number.

It is an amenable number.

30698709884 is a deficient number, since it is larger than the sum of its proper divisors (24757024324).

30698709884 is a wasteful number, since it uses less digits than its factorization.

30698709884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247570276 (or 247570274 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 62.

The spelling of 30698709884 in words is "thirty billion, six hundred ninety-eight million, seven hundred nine thousand, eight hundred eighty-four".

Divisors: 1 2 4 31 62 124 247570241 495140482 990280964 7674677471 15349354942 30698709884