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30190002903 = 3212343271769
BaseRepresentation
bin11100000111011101…
…101110001011010111
32212220222211001100200
4130013131232023113
5443312120043103
621511420311543
72116064535114
oct340735561327
985828731320
1030190002903
1111892519025
125a266a25b3
132b0185bc58
14166578790b
15bba65b0a3
hex70776e2d7

30190002903 has 12 divisors (see below), whose sum is σ = 43611475440. Its totient is φ = 20124963936.

The previous prime is 30190002893. The next prime is 30190002919. The reversal of 30190002903 is 30920009103.

It is not a de Polignac number, because 30190002903 - 222 = 30185808599 is a prime.

It is a super-2 number, since 2×301900029032 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30190002803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24798 + ... + 246971.

It is an arithmetic number, because the mean of its divisors is an integer number (3634289620).

Almost surely, 230190002903 is an apocalyptic number.

30190002903 is a deficient number, since it is larger than the sum of its proper divisors (13421472537).

30190002903 is a wasteful number, since it uses less digits than its factorization.

30190002903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284118 (or 284115 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The spelling of 30190002903 in words is "thirty billion, one hundred ninety million, two thousand, nine hundred three".

Divisors: 1 3 9 12343 37029 111087 271769 815307 2445921 3354444767 10063334301 30190002903