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1220433430 = 25122043343
BaseRepresentation
bin100100010111110…
…0101011000010110
310011001110102221011
41020233211120112
54444412332210
6321034042434
742146340646
oct11057453026
93131412834
101220433430
115769a2777
122a087941a
13165ac9c78
14b812c526
1572224d8a
hex48be5616

1220433430 has 8 divisors (see below), whose sum is σ = 2196780192. Its totient is φ = 488173368.

The previous prime is 1220433373. The next prime is 1220433457. The reversal of 1220433430 is 343340221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61021662 + ... + 61021681.

It is an arithmetic number, because the mean of its divisors is an integer number (274597524).

Almost surely, 21220433430 is an apocalyptic number.

1220433430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220433430 is a deficient number, since it is larger than the sum of its proper divisors (976346762).

1220433430 is a wasteful number, since it uses less digits than its factorization.

1220433430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122043350.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1220433430 is about 34934.7023745731. The cubic root of 1220433430 is about 1068.6562541942.

Adding to 1220433430 its reverse (343340221), we get a palindrome (1563773651).

The spelling of 1220433430 in words is "one billion, two hundred twenty million, four hundred thirty-three thousand, four hundred thirty".

Divisors: 1 2 5 10 122043343 244086686 610216715 1220433430