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15244057 = 197223347
BaseRepresentation
bin111010001001…
…101100011001
31001200110220201
4322021230121
512400302212
61302422201
7243400213
oct72115431
931613821
1015244057
1186720a4
125131961
13320976a
14204b5b3
151511b57
hexe89b19

15244057 has 8 divisors (see below), whose sum is σ = 15434496. Its totient is φ = 15055152.

The previous prime is 15244049. The next prime is 15244063. The reversal of 15244057 is 75044251.

15244057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 15244057 - 23 = 15244049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15244357) 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, 43758 + ... + 44104.

It is an arithmetic number, because the mean of its divisors is an integer number (1929312).

Almost surely, 215244057 is an apocalyptic number.

It is an amenable number.

15244057 is a deficient number, since it is larger than the sum of its proper divisors (190439).

15244057 is a wasteful number, since it uses less digits than its factorization.

15244057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 15244057 is about 3904.3638406276. The cubic root of 15244057 is about 247.9515655067.

The spelling of 15244057 in words is "fifteen million, two hundred forty-four thousand, fifty-seven".

Divisors: 1 197 223 347 43931 68359 77381 15244057