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26162740 = 2251308137
BaseRepresentation
bin110001111001…
…1011000110100
31211020012112101
41203303120310
523144201430
62332431444
7435244132
oct143633064
954205471
1026162740
111384a4aa
128918584
135560516
143690752
15246bdca
hex18f3634

26162740 has 12 divisors (see below), whose sum is σ = 54941796. Its totient is φ = 10465088.

The previous prime is 26162701. The next prime is 26162767. The reversal of 26162740 is 4726162.

It can be written as a sum of positive squares in 2 ways, for example, as 18905104 + 7257636 = 4348^2 + 2694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26162699 and 26162708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654049 + ... + 654088.

It is an arithmetic number, because the mean of its divisors is an integer number (4578483).

Almost surely, 226162740 is an apocalyptic number.

26162740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26162740 is an abundant number, since it is smaller than the sum of its proper divisors (28779056).

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

26162740 is a wasteful number, since it uses less digits than its factorization.

26162740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308146 (or 1308144 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 26162740 is about 5114.9525902006. The cubic root of 26162740 is about 296.8664199182.

It can be divided in two parts, 2616 and 2740, that added together give a triangular number (5356 = T103).

The spelling of 26162740 in words is "twenty-six million, one hundred sixty-two thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 1308137 2616274 5232548 6540685 13081370 26162740