261382248 has 32 divisors (see below), whose sum is σ = 726062400. Its totient is φ = 87127344.

The previous prime is 261382241. The next prime is 261382271. The reversal of 261382248 is 842283162.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (261382241) 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, 604836 + ... + 605267.

It is an arithmetic number, because the mean of its divisors is an integer number (22689450).

Almost surely, 2^261382248 is an apocalyptic number.

It is an amenable number.

261382248 is an abundant number, since it is smaller than the sum of its proper divisors (464680152).

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

261382248 is a wasteful number, since it uses less digits than its factorization.

261382248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210118 (or 1210108 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 261382248 is about 16167.3203716633. The cubic root of 261382248 is about 639.3794832031.

The spelling of 261382248 in words is "two hundred sixty-one million, three hundred eighty-two thousand, two hundred forty-eight".