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20724290276 = 22127148327509
BaseRepresentation
bin10011010011010000…
…111001001011100100
31222111022102000201112
4103103100321023210
5314420404242101
613304241244152
71332365363234
oct232320711344
958438360645
1020724290276
11887535a028
124024633658
131c53770171
141008583cc4
1581463a6bb
hex4d34392e4

20724290276 has 24 divisors (see below), whose sum is σ = 36579056640. Its totient is φ = 10273247712.

The previous prime is 20724290273. The next prime is 20724290333. The reversal of 20724290276 is 67209242702.

It is not an unprimeable number, because it can be changed into a prime (20724290273) 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, 739610 + ... + 767118.

It is an arithmetic number, because the mean of its divisors is an integer number (1524127360).

Almost surely, 220724290276 is an apocalyptic number.

It is an amenable number.

20724290276 is a deficient number, since it is larger than the sum of its proper divisors (15854766364).

20724290276 is a wasteful number, since it uses less digits than its factorization.

20724290276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29123 (or 29121 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 20724290276 in words is "twenty billion, seven hundred twenty-four million, two hundred ninety thousand, two hundred seventy-six".

Divisors: 1 2 4 127 254 508 1483 2966 5932 27509 55018 110036 188341 376682 753364 3493643 6987286 13974572 40795847 81591694 163183388 5181072569 10362145138 20724290276