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47902693 = 293494733
BaseRepresentation
bin1011011010111…
…0111111100101
310100010201010211
42312232333211
544230341233
64430415421
71121110666
oct266567745
9110121124
1047902693
1125049003
1214061571
139c028b7
14650d36d
1543135cd
hex2daefe5

47902693 has 8 divisors (see below), whose sum is σ = 49707000. Its totient is φ = 46108608.

The previous prime is 47902691. The next prime is 47902709. The reversal of 47902693 is 39620974.

It can be written as a sum of positive squares in 4 ways, for example, as 5678689 + 42224004 = 2383^2 + 6498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47902693 - 21 = 47902691 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 (47902691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7755 + ... + 12487.

It is an arithmetic number, because the mean of its divisors is an integer number (6213375).

Almost surely, 247902693 is an apocalyptic number.

It is an amenable number.

47902693 is a deficient number, since it is larger than the sum of its proper divisors (1804307).

47902693 is a wasteful number, since it uses less digits than its factorization.

47902693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 47902693 is about 6921.1771397646. The cubic root of 47902693 is about 363.1783711051.

The spelling of 47902693 in words is "forty-seven million, nine hundred two thousand, six hundred ninety-three".

Divisors: 1 29 349 4733 10121 137257 1651817 47902693