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1220434232 = 23190779997
BaseRepresentation
bin100100010111110…
…0101100100111000
310011001110111000212
41020233211210320
54444412343412
6321034050252
742146343203
oct11057454470
93131414025
101220434232
115769a3336
122a0879988
13165aca444
14b812c93a
1572225222
hex48be5938

1220434232 has 16 divisors (see below), whose sum is σ = 2289542760. Its totient is φ = 609889504.

The previous prime is 1220434219. The next prime is 1220434253. The reversal of 1220434232 is 2324340221.

It is a junction number, because it is equal to n+sod(n) for n = 1220434198 and 1220434207.

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, 24743 + ... + 55254.

Almost surely, 21220434232 is an apocalyptic number.

It is an amenable number.

1220434232 is a deficient number, since it is larger than the sum of its proper divisors (1069108528).

1220434232 is a wasteful number, since it uses less digits than its factorization.

1220434232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81910 (or 81906 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1220434232 is about 34934.7138531290. The cubic root of 1220434232 is about 1068.6564882810.

Adding to 1220434232 its reverse (2324340221), we get a palindrome (3544774453).

The spelling of 1220434232 in words is "one billion, two hundred twenty million, four hundred thirty-four thousand, two hundred thirty-two".

Divisors: 1 2 4 8 1907 3814 7628 15256 79997 159994 319988 639976 152554279 305108558 610217116 1220434232