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8742893 = 47186019
BaseRepresentation
bin100001010110…
…011111101101
3121110011222212
4201112133231
54214233033
6511220205
7134212325
oct41263755
917404885
108742893
114a31735
122b17665
131a71613
141238285
15b7a748
hex8567ed

8742893 has 4 divisors (see below), whose sum is σ = 8928960. Its totient is φ = 8556828.

The previous prime is 8742887. The next prime is 8742917. The reversal of 8742893 is 3982478.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3982478 = 21991239.

It is a cyclic number.

It is not a de Polignac number, because 8742893 - 28 = 8742637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8742893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742193) 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, 92963 + ... + 93056.

It is an arithmetic number, because the mean of its divisors is an integer number (2232240).

Almost surely, 28742893 is an apocalyptic number.

It is an amenable number.

8742893 is a deficient number, since it is larger than the sum of its proper divisors (186067).

8742893 is a wasteful number, since it uses less digits than its factorization.

8742893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186066.

The product of its digits is 96768, while the sum is 41.

The square root of 8742893 is about 2956.8383452600. The cubic root of 8742893 is about 206.0084594509.

The spelling of 8742893 in words is "eight million, seven hundred forty-two thousand, eight hundred ninety-three".

Divisors: 1 47 186019 8742893