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2930047 = 19154213
BaseRepresentation
bin1011001011010101111111
312111212021021
423023111333
51222230142
6142445011
733622261
oct13132577
95455237
102930047
11172142a
12b93767
137b7873
14563b31
153cd267
hex2cb57f

2930047 has 4 divisors (see below), whose sum is σ = 3084280. Its totient is φ = 2775816.

The previous prime is 2930033. The next prime is 2930071. The reversal of 2930047 is 7400392.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2930047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2930747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77088 + ... + 77125.

It is an arithmetic number, because the mean of its divisors is an integer number (771070).

22930047 is an apocalyptic number.

2930047 is a deficient number, since it is larger than the sum of its proper divisors (154233).

2930047 is a wasteful number, since it uses less digits than its factorization.

2930047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154232.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2930047 is about 1711.7380056539. The cubic root of 2930047 is about 143.0951328765.

The spelling of 2930047 in words is "two million, nine hundred thirty thousand, forty-seven".

Divisors: 1 19 154213 2930047