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121223704 = 2374394931
BaseRepresentation
bin1110011100110…
…11101000011000
322110002210122211
413032123220120
5222013124304
620010124504
73001245610
oct716335030
9273083584
10121223704
1162478188
1234720734
131c164c04
1412157a40
15a998204
hex739ba18

121223704 has 32 divisors (see below), whose sum is σ = 260409600. Its totient is φ = 51824160.

The previous prime is 121223699. The next prime is 121223737. The reversal of 121223704 is 407322121.

It is a super-2 number, since 2×1212237042 = 29390372822959232, which contains 22 as substring.

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, 22119 + ... + 27049.

It is an arithmetic number, because the mean of its divisors is an integer number (8137800).

Almost surely, 2121223704 is an apocalyptic number.

121223704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121223704 is an abundant number, since it is smaller than the sum of its proper divisors (139185896).

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

121223704 is a wasteful number, since it uses less digits than its factorization.

121223704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383 (or 5379 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 121223704 is about 11010.1636681750. The cubic root of 121223704 is about 494.9133664662.

Adding to 121223704 its reverse (407322121), we get a palindrome (528545825).

The spelling of 121223704 in words is "one hundred twenty-one million, two hundred twenty-three thousand, seven hundred four".

Divisors: 1 2 4 7 8 14 28 56 439 878 1756 3073 3512 4931 6146 9862 12292 19724 24584 34517 39448 69034 138068 276136 2164709 4329418 8658836 15152963 17317672 30305926 60611852 121223704