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26680404 = 2233760091
BaseRepresentation
bin110010111000…
…1110001010100
31212012111122010
41211301301110
523312233104
62351504220
7442531302
oct145616124
955174563
1026680404
1114073423
128b28070
1356b202a
143787272
152520489
hex1971c54

26680404 has 24 divisors (see below), whose sum is σ = 63937888. Its totient is φ = 8652960.

The previous prime is 26680403. The next prime is 26680411. The reversal of 26680404 is 40408662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26680403) 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, 29602 + ... + 30489.

Almost surely, 226680404 is an apocalyptic number.

It is an amenable number.

26680404 is an abundant number, since it is smaller than the sum of its proper divisors (37257484).

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

26680404 is a wasteful number, since it uses less digits than its factorization.

26680404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60135 (or 60133 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 26680404 is about 5165.3077352661. The cubic root of 26680404 is about 298.8116097559.

The spelling of 26680404 in words is "twenty-six million, six hundred eighty thousand, four hundred four".

Divisors: 1 2 3 4 6 12 37 74 111 148 222 444 60091 120182 180273 240364 360546 721092 2223367 4446734 6670101 8893468 13340202 26680404