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23630997 = 3135211163
BaseRepresentation
bin101101000100…
…1010010010101
31122110120122010
41122021102111
522022142442
62202254433
7404601015
oct132112225
948416563
1023630997
1112380355
127ab7419
134b85050
1431d1c45
15211bb9c
hex1689495

23630997 has 16 divisors (see below), whose sum is σ = 34026048. Its totient is φ = 14501760.

The previous prime is 23630987. The next prime is 23631007. The reversal of 23630997 is 79903632.

It is an interprime number because it is at equal distance from previous prime (23630987) and next prime (23631007).

It is not a de Polignac number, because 23630997 - 26 = 23630933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23630977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19738 + ... + 20900.

It is an arithmetic number, because the mean of its divisors is an integer number (2126628).

Almost surely, 223630997 is an apocalyptic number.

It is an amenable number.

23630997 is a deficient number, since it is larger than the sum of its proper divisors (10395051).

23630997 is a wasteful number, since it uses less digits than its factorization.

23630997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 23630997 is about 4861.1723894550. The cubic root of 23630997 is about 286.9639544058.

The spelling of 23630997 in words is "twenty-three million, six hundred thirty thousand, nine hundred ninety-seven".

Divisors: 1 3 13 39 521 1163 1563 3489 6773 15119 20319 45357 605923 1817769 7876999 23630997