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23019460 = 2251150973
BaseRepresentation
bin101011111001…
…1111111000100
31121022111202121
41113303333010
521343110320
62141215324
7366443062
oct127637704
947274677
1023019460
1111aa2952
127861544
1349cc8a9
1430b3032
15204a8aa
hex15f3fc4

23019460 has 12 divisors (see below), whose sum is σ = 48340908. Its totient is φ = 9207776.

The previous prime is 23019443. The next prime is 23019463. The reversal of 23019460 is 6491032.

It can be written as a sum of positive squares in 2 ways, for example, as 5846724 + 17172736 = 2418^2 + 4144^2 .

It is not an unprimeable number, because it can be changed into a prime (23019463) 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, 575467 + ... + 575506.

It is an arithmetic number, because the mean of its divisors is an integer number (4028409).

Almost surely, 223019460 is an apocalyptic number.

23019460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23019460 is an abundant number, since it is smaller than the sum of its proper divisors (25321448).

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

23019460 is a wasteful number, since it uses less digits than its factorization.

23019460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150982 (or 1150980 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 23019460 is about 4797.8599395981. The cubic root of 23019460 is about 284.4668806675.

The spelling of 23019460 in words is "twenty-three million, nineteen thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 1150973 2301946 4603892 5754865 11509730 23019460