Search a number
-
+
10227997 = 138872
BaseRepresentation
bin100111000001…
…000100011101
3201020122011201
4213001010131
510104243442
61003115501
7152636143
oct47010435
921218151
1010227997
11585649a
123512b91
132171590
141503593
15d707b7
hex9c111d

10227997 has 6 divisors (see below), whose sum is σ = 11027198. Its totient is φ = 9430584.

The previous prime is 10227991. The next prime is 10228027. The reversal of 10227997 is 79972201.

10227997 is digitally balanced in base 3, 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., 7080921 + 3147076 = 2661^2 + 1774^2 .

It is not a de Polignac number, because 10227997 - 23 = 10227989 is a prime.

It is a super-2 number, since 2×102279972 = 209223845264018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10227991) 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, 11088 + ... + 11974.

Almost surely, 210227997 is an apocalyptic number.

It is an amenable number.

10227997 is a deficient number, since it is larger than the sum of its proper divisors (799201).

10227997 is an frugal number, since it uses more digits than its factorization.

10227997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 10227997 is about 3198.1239813366. The cubic root of 10227997 is about 217.0685293975.

The spelling of 10227997 in words is "ten million, two hundred twenty-seven thousand, nine hundred ninety-seven".

Divisors: 1 13 887 11531 786769 10227997