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23074220 = 2251388747
BaseRepresentation
bin101100000000…
…1010110101100
31121102021212202
41120001112230
521401333340
62142321032
7400061531
oct130012654
947367782
1023074220
1112030004
127889178
134a1b7b0
1430c8d88
15205bc15
hex16015ac

23074220 has 24 divisors (see below), whose sum is σ = 52183824. Its totient is φ = 8519616.

The previous prime is 23074213. The next prime is 23074243. The reversal of 23074220 is 2247032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23074192 and 23074201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44114 + ... + 44633.

It is an arithmetic number, because the mean of its divisors is an integer number (2174326).

Almost surely, 223074220 is an apocalyptic number.

23074220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23074220 is an abundant number, since it is smaller than the sum of its proper divisors (29109604).

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

23074220 is a wasteful number, since it uses less digits than its factorization.

23074220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88769 (or 88767 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 23074220 is about 4803.5632607472. The cubic root of 23074220 is about 284.6922707004.

The spelling of 23074220 in words is "twenty-three million, seventy-four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 88747 177494 354988 443735 887470 1153711 1774940 2307422 4614844 5768555 11537110 23074220