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23923480 = 2357431987
BaseRepresentation
bin101101101000…
…0101100011000
31200000102211211
41123100230120
522111022410
62212432504
7410226520
oct133205430
950012754
1023923480
1112560079
128018734
134c58209
14326a680
15217868a
hex16d0b18

23923480 has 64 divisors (see below), whose sum is σ = 62979840. Its totient is φ = 8007552.

The previous prime is 23923477. The next prime is 23923499. The reversal of 23923480 is 8432932.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11047 + ... + 13033.

It is an arithmetic number, because the mean of its divisors is an integer number (984060).

Almost surely, 223923480 is an apocalyptic number.

23923480 is a gapful number since it is divisible by the number (20) 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 23923480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31489920).

23923480 is an abundant number, since it is smaller than the sum of its proper divisors (39056360).

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

23923480 is a wasteful number, since it uses less digits than its factorization.

23923480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048 (or 2044 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 23923480 is about 4891.1634607729. The cubic root of 23923480 is about 288.1430295213.

The spelling of 23923480 in words is "twenty-three million, nine hundred twenty-three thousand, four hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 43 56 70 86 140 172 215 280 301 344 430 602 860 1204 1505 1720 1987 2408 3010 3974 6020 7948 9935 12040 13909 15896 19870 27818 39740 55636 69545 79480 85441 111272 139090 170882 278180 341764 427205 556360 598087 683528 854410 1196174 1708820 2392348 2990435 3417640 4784696 5980870 11961740 23923480