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10152981 = 321128109
BaseRepresentation
bin100110101110…
…110000010101
3201002211021100
4212232300111
510044343411
61001340313
7152204346
oct46566025
921084240
1010152981
1158050a3
123497699
1321463a7
1414c40cd
15d58456
hex9aec15

10152981 has 6 divisors (see below), whose sum is σ = 14665430. Its totient is φ = 6768648.

The previous prime is 10152949. The next prime is 10152991. The reversal of 10152981 is 18925101.

10152981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7700625 + 2452356 = 2775^2 + 1566^2 .

It is not a de Polignac number, because 10152981 - 25 = 10152949 is a prime.

It is a super-2 number, since 2×101529812 = 206166046372722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10152931) 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, 564046 + ... + 564063.

Almost surely, 210152981 is an apocalyptic number.

It is an amenable number.

10152981 is a deficient number, since it is larger than the sum of its proper divisors (4512449).

10152981 is a wasteful number, since it uses less digits than its factorization.

10152981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128115 (or 1128112 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 10152981 is about 3186.3742718017. The cubic root of 10152981 is about 216.5365390880.

The spelling of 10152981 in words is "ten million, one hundred fifty-two thousand, nine hundred eighty-one".

Divisors: 1 3 9 1128109 3384327 10152981