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23106380 = 22511127827
BaseRepresentation
bin101100000100…
…1001101001100
31121110220222212
41120021031030
521403401010
62143125552
7400254353
oct130111514
947426885
1023106380
1112052190
1278a38b8
134a3031b
1430d699a
152066505
hex160934c

23106380 has 48 divisors (see below), whose sum is σ = 53415936. Its totient is φ = 8326080.

The previous prime is 23106379. The next prime is 23106397. The reversal of 23106380 is 8360132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27527 + ... + 28353.

It is an arithmetic number, because the mean of its divisors is an integer number (1112832).

Almost surely, 223106380 is an apocalyptic number.

23106380 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 23106380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26707968).

23106380 is an abundant number, since it is smaller than the sum of its proper divisors (30309556).

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

23106380 is a wasteful number, since it uses less digits than its factorization.

23106380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 23106380 is about 4806.9096101341. The cubic root of 23106380 is about 284.8244738416.

The spelling of 23106380 in words is "twenty-three million, one hundred six thousand, three hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 127 220 254 508 635 827 1270 1397 1654 2540 2794 3308 4135 5588 6985 8270 9097 13970 16540 18194 27940 36388 45485 90970 105029 181940 210058 420116 525145 1050290 1155319 2100580 2310638 4621276 5776595 11553190 23106380