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23481480 = 23351117789
BaseRepresentation
bin101100110010…
…0110010001000
31122011222112110
41121210302020
522002401410
62155142320
7403406061
oct131446210
948158473
1023481480
1112288a90
127a449a0
134b31c89
143193568
1520dc720
hex1664c88

23481480 has 64 divisors (see below), whose sum is σ = 76852800. Its totient is φ = 5692160.

The previous prime is 23481467. The next prime is 23481487. The reversal of 23481480 is 8418432.

23481480 = T81 + T82 + ... + T520.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (23481487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7575 + ... + 10214.

It is an arithmetic number, because the mean of its divisors is an integer number (1200825).

Almost surely, 223481480 is an apocalyptic number.

23481480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23481480 is an abundant number, since it is smaller than the sum of its proper divisors (53371320).

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

23481480 is a wasteful number, since it uses less digits than its factorization.

23481480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17814 (or 17810 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 23481480 is about 4845.7692887714. The cubic root of 23481480 is about 286.3574515717.

It can be divided in two parts, 2348 and 1480, that added together give a triangular number (3828 = T87).

The spelling of 23481480 in words is "twenty-three million, four hundred eighty-one thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 88 110 120 132 165 220 264 330 440 660 1320 17789 35578 53367 71156 88945 106734 142312 177890 195679 213468 266835 355780 391358 426936 533670 587037 711560 782716 978395 1067340 1174074 1565432 1956790 2134680 2348148 2935185 3913580 4696296 5870370 7827160 11740740 23481480