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30790473 = 372209459
BaseRepresentation
bin111010101110…
…1001101001001
32010221022120220
41311131031021
530340243343
63015540253
7522500100
oct165351511
963838526
1030790473
111642037a
12a38a689
1364c0a1c
144137037
152a83183
hex1d5d349

30790473 has 12 divisors (see below), whose sum is σ = 47756880. Its totient is φ = 17594472.

The previous prime is 30790447. The next prime is 30790481. The reversal of 30790473 is 37409703.

It is not a de Polignac number, because 30790473 - 214 = 30774089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30790483) 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, 104583 + ... + 104876.

It is an arithmetic number, because the mean of its divisors is an integer number (3979740).

Almost surely, 230790473 is an apocalyptic number.

It is an amenable number.

30790473 is a deficient number, since it is larger than the sum of its proper divisors (16966407).

30790473 is a wasteful number, since it uses less digits than its factorization.

30790473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209476 (or 209469 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 30790473 is about 5548.9163806999. The cubic root of 30790473 is about 313.4287183821.

The spelling of 30790473 in words is "thirty million, seven hundred ninety thousand, four hundred seventy-three".

Divisors: 1 3 7 21 49 147 209459 628377 1466213 4398639 10263491 30790473