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26872980 = 2235447883
BaseRepresentation
bin110011010000…
…0110010010100
31212120021210120
41212200302110
523334413410
62355551540
7444262611
oct146406224
955507716
1026872980
1114195082
128bbb5b0
13574b894
1437d7508
15255c570
hex19a0c94

26872980 has 24 divisors (see below), whose sum is σ = 75244512. Its totient is φ = 7166112.

The previous prime is 26872933. The next prime is 26872991. The reversal of 26872980 is 8927862.

It is a happy number.

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, 223882 + ... + 224001.

It is an arithmetic number, because the mean of its divisors is an integer number (3135188).

Almost surely, 226872980 is an apocalyptic number.

26872980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26872980 is an abundant number, since it is smaller than the sum of its proper divisors (48371532).

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

26872980 is a wasteful number, since it uses less digits than its factorization.

26872980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447895 (or 447893 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 26872980 is about 5183.9155085707. The cubic root of 26872980 is about 299.5288158948.

The spelling of 26872980 in words is "twenty-six million, eight hundred seventy-two thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 447883 895766 1343649 1791532 2239415 2687298 4478830 5374596 6718245 8957660 13436490 26872980