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1220032230 = 23540667741
BaseRepresentation
bin100100010111000…
…0011011011100110
310011000201001120220
41020232003123212
54444312012410
6321021305210
742143050164
oct11056033346
93130631526
101220032230
115767492aa
122a0705206
131659b9481
14b8066234
1572196070
hex48b836e6

1220032230 has 16 divisors (see below), whose sum is σ = 2928077424. Its totient is φ = 325341920.

The previous prime is 1220032211. The next prime is 1220032241. The reversal of 1220032230 is 322300221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 20333841 + ... + 20333900.

It is an arithmetic number, because the mean of its divisors is an integer number (183004839).

Almost surely, 21220032230 is an apocalyptic number.

1220032230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220032230 is an abundant number, since it is smaller than the sum of its proper divisors (1708045194).

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

1220032230 is a wasteful number, since it uses less digits than its factorization.

1220032230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40667751.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1220032230 is about 34928.9597612067. The cubic root of 1220032230 is about 1068.5391395505.

Adding to 1220032230 its reverse (322300221), we get a palindrome (1542332451).

The spelling of 1220032230 in words is "one billion, two hundred twenty million, thirty-two thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 40667741 81335482 122003223 203338705 244006446 406677410 610016115 1220032230