261103028 has 6 divisors (see below), whose sum is σ = 456930306. Its totient is φ = 130551512.

The previous prime is 261103027. The next prime is 261103039. The reversal of 261103028 is 820301162.

261103028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 247055524 + 14047504 = 15718^2 + 3748^2 .

It is a junction number, because it is equal to n+sod(n) for n = 261102994 and 261103012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261103027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32637875 + ... + 32637882.

It is an arithmetic number, because the mean of its divisors is an integer number (76155051).

Almost surely, 2^261103028 is an apocalyptic number.

It is an amenable number.

261103028 is a deficient number, since it is larger than the sum of its proper divisors (195827278).

261103028 is a wasteful number, since it uses less digits than its factorization.

261103028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65275761 (or 65275759 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 261103028 is about 16158.6827433427. The cubic root of 261103028 is about 639.1517310015.

The spelling of 261103028 in words is "two hundred sixty-one million, one hundred three thousand, twenty-eight".