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23009748 = 2231917479
BaseRepresentation
bin101011111000…
…1100111010100
31121022000102220
41113301213110
521342302443
62141102340
7366402546
oct127614724
947260386
1023009748
1111a96623
1278579b0
1349c8348
1430ad696
152047a83
hex15f19d4

23009748 has 12 divisors (see below), whose sum is σ = 53689440. Its totient is φ = 7669912.

The previous prime is 23009747. The next prime is 23009771. The reversal of 23009748 is 84790032.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23009747) 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, 958728 + ... + 958751.

It is an arithmetic number, because the mean of its divisors is an integer number (4474120).

Almost surely, 223009748 is an apocalyptic number.

It is an amenable number.

23009748 is an abundant number, since it is smaller than the sum of its proper divisors (30679692).

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

23009748 is a wasteful number, since it uses less digits than its factorization.

23009748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917486 (or 1917484 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 23009748 is about 4796.8477149061. The cubic root of 23009748 is about 284.4268691443.

The spelling of 23009748 in words is "twenty-three million, nine thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 12 1917479 3834958 5752437 7669916 11504874 23009748