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261772 = 2279349
BaseRepresentation
bin111111111010001100
3111022002021
4333322030
531334042
65335524
72140120
oct777214
9438067
10261772
11169745
121075a4
13921c4
146b580
1552867
hex3fe8c

261772 has 12 divisors (see below), whose sum is σ = 523600. Its totient is φ = 112176.

The previous prime is 261761. The next prime is 261773. The reversal of 261772 is 277162.

261772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (261773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4647 + ... + 4702.

2261772 is an apocalyptic number.

It is an amenable number.

261772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

261772 is a wasteful number, since it uses less digits than its factorization.

261772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9360 (or 9358 counting only the distinct ones).

The product of its digits is 1176, while the sum is 25.

The square root of 261772 is about 511.6365897783. The cubic root of 261772 is about 63.9697122312.

The spelling of 261772 in words is "two hundred sixty-one thousand, seven hundred seventy-two".