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23064940 = 2251153247
BaseRepresentation
bin101011111111…
…1000101101100
31121101211011001
41113333011230
521401034230
62142210044
7400022503
oct127770554
947354131
1023064940
1112024038
127883924
134a174c2
1430c583a
1520590ca
hex15ff16c

23064940 has 12 divisors (see below), whose sum is σ = 48436416. Its totient is φ = 9225968.

The previous prime is 23064931. The next prime is 23064941. The reversal of 23064940 is 4946032.

It is a junction number, because it is equal to n+sod(n) for n = 23064899 and 23064908.

It is not an unprimeable number, because it can be changed into a prime (23064941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576604 + ... + 576643.

It is an arithmetic number, because the mean of its divisors is an integer number (4036368).

Almost surely, 223064940 is an apocalyptic number.

23064940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23064940 is an abundant number, since it is smaller than the sum of its proper divisors (25371476).

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

23064940 is a wasteful number, since it uses less digits than its factorization.

23064940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153256 (or 1153254 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 23064940 is about 4802.5972140083. The cubic root of 23064940 is about 284.6540996950.

The spelling of 23064940 in words is "twenty-three million, sixty-four thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 1153247 2306494 4612988 5766235 11532470 23064940