981552270 has 64 divisors (see below), whose sum is σ = 2446355520. Its totient is φ = 251747328.

The previous prime is 981552269. The next prime is 981552283. The reversal of 981552270 is 72255189.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238954 + ... + 243026.

It is an arithmetic number, because the mean of its divisors is an integer number (38224305).

Almost surely, 2^981552270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981552270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223177760).

981552270 is an abundant number, since it is smaller than the sum of its proper divisors (1464803250).

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

981552270 is a wasteful number, since it uses less digits than its factorization.

981552270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 981552270 is about 31329.7345983013. The cubic root of 981552270 is about 993.8125511040.

The spelling of 981552270 in words is "nine hundred eighty-one million, five hundred fifty-two thousand, two hundred seventy".