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23460749 = 132138821
BaseRepresentation
bin101100101111…
…1101110001101
31122010221002122
41121133232031
522001220444
62154502325
7403261454
oct131375615
948127078
1023460749
1112274454
127a349a5
134b25700
143189b9b
1520d64ee
hex165fb8d

23460749 has 6 divisors (see below), whose sum is σ = 25404426. Its totient is φ = 21655920.

The previous prime is 23460737. The next prime is 23460761. The reversal of 23460749 is 94706432.

It is an interprime number because it is at equal distance from previous prime (23460737) and next prime (23460761).

It can be written as a sum of positive squares in 3 ways, for example, as 1087849 + 22372900 = 1043^2 + 4730^2 .

It is a de Polignac number, because none of the positive numbers 2k-23460749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23460779) 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, 69242 + ... + 69579.

It is an arithmetic number, because the mean of its divisors is an integer number (4234071).

Almost surely, 223460749 is an apocalyptic number.

It is an amenable number.

23460749 is a deficient number, since it is larger than the sum of its proper divisors (1943677).

23460749 is a wasteful number, since it uses less digits than its factorization.

23460749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138847 (or 138834 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 23460749 is about 4843.6297339908. The cubic root of 23460749 is about 286.2731550080.

The spelling of 23460749 in words is "twenty-three million, four hundred sixty thousand, seven hundred forty-nine".

Divisors: 1 13 169 138821 1804673 23460749