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10253988 = 2232284833
BaseRepresentation
bin100111000111…
…011010100100
3201021221211100
4213013122210
510111111423
61003440100
7153105003
oct47073244
921257740
1010253988
115873a78
123526030
132180364
14150cc3a
15d78343
hex9c76a4

10253988 has 18 divisors (see below), whose sum is σ = 25919894. Its totient is φ = 3417984.

The previous prime is 10253987. The next prime is 10253989. The reversal of 10253988 is 88935201.

10253988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10253987) and next prime (10253989).

It can be written as a sum of positive squares in only one way, i.e., 6749604 + 3504384 = 2598^2 + 1872^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 284833 = 10253988 / (1 + 0 + 2 + 5 + 3 + 9 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (10253987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142381 + ... + 142452.

Almost surely, 210253988 is an apocalyptic number.

10253988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

10253988 is an abundant number, since it is smaller than the sum of its proper divisors (15665906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10253988 is a wasteful number, since it uses less digits than its factorization.

10253988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284843 (or 284838 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 10253988 is about 3202.1848791099. The cubic root of 10253988 is about 217.2522426553.

The spelling of 10253988 in words is "ten million, two hundred fifty-three thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 284833 569666 854499 1139332 1708998 2563497 3417996 5126994 10253988