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102204420 = 22351989653
BaseRepresentation
bin1100001011110…
…00010000000100
321010022112002220
412011320100010
5202131020140
614050332340
72350503033
oct605702004
9233275086
10102204420
115276776a
122a28a0b0
1318235cb6
14d80671a
158e8cbd0
hex6178404

102204420 has 48 divisors (see below), whose sum is σ = 301237440. Its totient is φ = 25819776.

The previous prime is 102204419. The next prime is 102204437. The reversal of 102204420 is 24402201.

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

It is a self number, because there is not a number n which added to its sum of digits gives 102204420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43687 + ... + 45966.

It is an arithmetic number, because the mean of its divisors is an integer number (6275780).

Almost surely, 2102204420 is an apocalyptic number.

102204420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102204420 is an abundant number, since it is smaller than the sum of its proper divisors (199033020).

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

102204420 is a wasteful number, since it uses less digits than its factorization.

102204420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89684 (or 89682 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 102204420 is about 10109.6201709065. The cubic root of 102204420 is about 467.5447944343.

Adding to 102204420 its reverse (24402201), we get a palindrome (126606621).

The spelling of 102204420 in words is "one hundred two million, two hundred four thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 89653 179306 268959 358612 448265 537918 896530 1075836 1344795 1703407 1793060 2689590 3406814 5110221 5379180 6813628 8517035 10220442 17034070 20440884 25551105 34068140 51102210 102204420