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221422302 = 2334100413
BaseRepresentation
bin11010011001010…
…10001011011110
3120102122102022000
431030222023132
5423141003202
633545503130
75326026033
oct1514521336
9512572260
10221422302
11103a94942
12621a1aa6
1336b47c1a
142159b38a
151468b91c
hexd32a2de

221422302 has 16 divisors (see below), whose sum is σ = 492049680. Its totient is φ = 73807416.

The previous prime is 221422291. The next prime is 221422307. The reversal of 221422302 is 203224122.

Adding to 221422302 its reverse (203224122), we get a palindrome (424646424).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050153 + ... + 2050260.

It is an arithmetic number, because the mean of its divisors is an integer number (30753105).

Almost surely, 2221422302 is an apocalyptic number.

221422302 is an abundant number, since it is smaller than the sum of its proper divisors (270627378).

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

221422302 is a wasteful number, since it uses less digits than its factorization.

221422302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100424 (or 4100418 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 221422302 is about 14880.2655218245. The cubic root of 221422302 is about 604.9792147311.

The spelling of 221422302 in words is "two hundred twenty-one million, four hundred twenty-two thousand, three hundred two".

Divisors: 1 2 3 6 9 18 27 54 4100413 8200826 12301239 24602478 36903717 73807434 110711151 221422302