261032032 has 24 divisors (see below), whose sum is σ = 540955800. Its totient is φ = 123646464.

The previous prime is 261032029. The next prime is 261032033. The reversal of 261032032 is 230230162.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261032033) 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, 214057 + ... + 215272.

It is an arithmetic number, because the mean of its divisors is an integer number (22539825).

Almost surely, 2^261032032 is an apocalyptic number.

It is an amenable number.

261032032 is an abundant number, since it is smaller than the sum of its proper divisors (279923768).

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

261032032 is a wasteful number, since it uses less digits than its factorization.

261032032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429358 (or 429350 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 261032032 is about 16156.4857565004. The cubic root of 261032032 is about 639.0937955956.

Adding to 261032032 its reverse (230230162), we get a palindrome (491262194).

The spelling of 261032032 in words is "two hundred sixty-one million, thirty-two thousand, thirty-two".