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26990274 = 2331145109
BaseRepresentation
bin110011011110…
…1011011000010
31212210020200210
41212331123002
523402142044
62402254550
7445261563
oct146753302
955706623
1026990274
1114265213
129057456
13579009c
14382816a
1525821b9
hex19bd6c2

26990274 has 16 divisors (see below), whose sum is σ = 55722240. Its totient is φ = 8706480.

The previous prime is 26990273. The next prime is 26990287. The reversal of 26990274 is 47209962.

It is not an unprimeable number, because it can be changed into a prime (26990273) 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, 72369 + ... + 72740.

It is an arithmetic number, because the mean of its divisors is an integer number (3482640).

Almost surely, 226990274 is an apocalyptic number.

26990274 is an abundant number, since it is smaller than the sum of its proper divisors (28731966).

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

26990274 is a wasteful number, since it uses less digits than its factorization.

26990274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145145.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 26990274 is about 5195.2164536235. The cubic root of 26990274 is about 299.9639734516.

The spelling of 26990274 in words is "twenty-six million, nine hundred ninety thousand, two hundred seventy-four".

Divisors: 1 2 3 6 31 62 93 186 145109 290218 435327 870654 4498379 8996758 13495137 26990274