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26980492 = 22711251349
BaseRepresentation
bin110011011101…
…1000010001100
31212202202021111
41212323002030
523401333432
62402141404
7445221220
oct146730214
955682244
1026980492
1114258930
129051864
1357887b6
143824780
15257e347
hex19bb08c

26980492 has 48 divisors (see below), whose sum is σ = 59270400. Its totient is φ = 10440000.

The previous prime is 26980463. The next prime is 26980507. The reversal of 26980492 is 29408962.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77134 + ... + 77482.

It is an arithmetic number, because the mean of its divisors is an integer number (1234800).

Almost surely, 226980492 is an apocalyptic number.

26980492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26980492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29635200).

26980492 is an abundant number, since it is smaller than the sum of its proper divisors (32289908).

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

26980492 is a wasteful number, since it uses less digits than its factorization.

26980492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 26980492 is about 5194.2749253385. The cubic root of 26980492 is about 299.9277307401.

It can be divided in two parts, 26980 and 492, that added together give a palindrome (27472).

The spelling of 26980492 in words is "twenty-six million, nine hundred eighty thousand, four hundred ninety-two".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 251 308 349 502 698 1004 1396 1757 2443 2761 3514 3839 4886 5522 7028 7678 9772 11044 15356 19327 26873 38654 53746 77308 87599 107492 175198 350396 613193 963589 1226386 1927178 2452772 3854356 6745123 13490246 26980492