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23030392 = 237411109
BaseRepresentation
bin101011111011…
…0101001111000
31121100001202111
41113312221320
521343433032
62141342104
7366520000
oct127665170
947301674
1023030392
1112000090
127867934
134a04868
1430b7000
15204dc47
hex15f6a78

23030392 has 80 divisors (see below), whose sum is σ = 55459800. Its totient is φ = 8890560.

The previous prime is 23030389. The next prime is 23030407. The reversal of 23030392 is 29303032.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 211234 + ... + 211342.

Almost surely, 223030392 is an apocalyptic number.

23030392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23030392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27729900).

23030392 is an abundant number, since it is smaller than the sum of its proper divisors (32429408).

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

23030392 is a wasteful number, since it uses less digits than its factorization.

23030392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 23030392 is about 4798.9990623046. Note that the first 3 decimals coincide. The cubic root of 23030392 is about 284.5119048888.

The spelling of 23030392 in words is "twenty-three million, thirty thousand, three hundred ninety-two".

Divisors: 1 2 4 7 8 11 14 22 28 44 49 56 77 88 98 109 154 196 218 308 343 392 436 539 616 686 763 872 1078 1199 1372 1526 2156 2398 2401 2744 3052 3773 4312 4796 4802 5341 6104 7546 8393 9592 9604 10682 15092 16786 19208 21364 26411 30184 33572 37387 42728 52822 58751 67144 74774 105644 117502 149548 211288 235004 261709 299096 411257 470008 523418 822514 1046836 1645028 2093672 2878799 3290056 5757598 11515196 23030392