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19230961 = 174992267
BaseRepresentation
bin100100101011…
…1000011110001
31100012000220211
41021113003301
514410342321
61524104121
7322313641
oct111270361
940160824
1019230961
11a945562
126535041
133ca4389
1427a8521
151a4d0e1
hex12570f1

19230961 has 8 divisors (see below), whose sum is σ = 20412000. Its totient is φ = 18055488.

The previous prime is 19230941. The next prime is 19230971. The reversal of 19230961 is 16903291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19230961 - 219 = 18706673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19230941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7350 + ... + 9616.

It is an arithmetic number, because the mean of its divisors is an integer number (2551500).

Almost surely, 219230961 is an apocalyptic number.

It is an amenable number.

19230961 is a deficient number, since it is larger than the sum of its proper divisors (1181039).

19230961 is a wasteful number, since it uses less digits than its factorization.

19230961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 19230961 is about 4385.3119615371. The cubic root of 19230961 is about 267.9170354689.

The spelling of 19230961 in words is "nineteen million, two hundred thirty thousand, nine hundred sixty-one".

Divisors: 1 17 499 2267 8483 38539 1131233 19230961