Search a number
-
+
23093220 = 2235557691
BaseRepresentation
bin101100000010…
…1111111100100
31121110020221110
41120011333210
521402440340
62142545020
7400201113
oct130057744
947406843
1023093220
1112043307
127898170
134a27337
1430d1c7a
152062680
hex1605fe4

23093220 has 48 divisors (see below), whose sum is σ = 64870848. Its totient is φ = 6138240.

The previous prime is 23093207. The next prime is 23093243. The reversal of 23093220 is 2239032.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33075 + ... + 33765.

It is an arithmetic number, because the mean of its divisors is an integer number (1351476).

Almost surely, 223093220 is an apocalyptic number.

23093220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23093220 is an abundant number, since it is smaller than the sum of its proper divisors (41777628).

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

23093220 is a wasteful number, since it uses less digits than its factorization.

23093220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 23093220 is about 4805.5405523208. The cubic root of 23093220 is about 284.7703906273.

The spelling of 23093220 in words is "twenty-three million, ninety-three thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 557 691 1114 1382 1671 2073 2228 2764 2785 3342 3455 4146 5570 6684 6910 8292 8355 10365 11140 13820 16710 20730 33420 41460 384887 769774 1154661 1539548 1924435 2309322 3848870 4618644 5773305 7697740 11546610 23093220