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18962228 = 2219249503
BaseRepresentation
bin100100001010…
…1011100110100
31022200101021202
41020111130310
514323242403
61514232032
7320114315
oct110253464
938611252
1018962228
11a78166a
126425618
133c0bc6c
14273860c
1519e8688
hex1215734

18962228 has 12 divisors (see below), whose sum is σ = 34930560. Its totient is φ = 8982072.

The previous prime is 18962227. The next prime is 18962233. The reversal of 18962228 is 82226981.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 18962191 and 18962200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18962221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 124676 + ... + 124827.

It is an arithmetic number, because the mean of its divisors is an integer number (2910880).

Almost surely, 218962228 is an apocalyptic number.

It is an amenable number.

18962228 is a deficient number, since it is larger than the sum of its proper divisors (15968332).

18962228 is a wasteful number, since it uses less digits than its factorization.

18962228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249526 (or 249524 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 18962228 is about 4354.5640424731. The cubic root of 18962228 is about 266.6632214833.

The spelling of 18962228 in words is "eighteen million, nine hundred sixty-two thousand, two hundred twenty-eight".

Divisors: 1 2 4 19 38 76 249503 499006 998012 4740557 9481114 18962228