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23140180 = 2257165287
BaseRepresentation
bin101100001000…
…1011101010100
31121112122100201
41120101131110
521410441210
62143550244
7400455040
oct130213524
947478321
1023140180
1112075618
1278bb384
134a4281b
143105020
15207153a
hex1611754

23140180 has 24 divisors (see below), whose sum is σ = 55536768. Its totient is φ = 7933728.

The previous prime is 23140177. The next prime is 23140199. The reversal of 23140180 is 8104132.

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 7 ways as a sum of consecutive naturals, for example, 82504 + ... + 82783.

It is an arithmetic number, because the mean of its divisors is an integer number (2314032).

Almost surely, 223140180 is an apocalyptic number.

23140180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23140180 is an abundant number, since it is smaller than the sum of its proper divisors (32396588).

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

23140180 is a wasteful number, since it uses less digits than its factorization.

23140180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165303 (or 165301 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 23140180 is about 4810.4240977278. The cubic root of 23140180 is about 284.9632865399.

The spelling of 23140180 in words is "twenty-three million, one hundred forty thousand, one hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 165287 330574 661148 826435 1157009 1652870 2314018 3305740 4628036 5785045 11570090 23140180