261046000 has 40 divisors (see below), whose sum is σ = 631214064. Its totient is φ = 104417600.

The previous prime is 261045979. The next prime is 261046007. The reversal of 261046000 is 640162.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261046007) 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, 63262 + ... + 67261.

Almost surely, 2^261046000 is an apocalyptic number.

261046000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261046000 is an abundant number, since it is smaller than the sum of its proper divisors (370168064).

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

261046000 is a wasteful number, since it uses less digits than its factorization.

261046000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130546 (or 130530 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 261046000 is about 16156.9180229399. The cubic root of 261046000 is about 639.1051948389.

Adding to 261046000 its reverse (640162), we get a palindrome (261686162).

The spelling of 261046000 in words is "two hundred sixty-one million, forty-six thousand".