981136420 has 24 divisors (see below), whose sum is σ = 2247694848. Its totient is φ = 356776800.

The previous prime is 981136361. The next prime is 981136427. The reversal of 981136420 is 24631189.

It is not an unprimeable number, because it can be changed into a prime (981136427) 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, 2229636 + ... + 2230075.

It is an arithmetic number, because the mean of its divisors is an integer number (93653952).

Almost surely, 2^981136420 is an apocalyptic number.

It is an amenable number.

981136420 is an abundant number, since it is smaller than the sum of its proper divisors (1266558428).

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

981136420 is a wasteful number, since it uses less digits than its factorization.

981136420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459731 (or 4459729 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 981136420 is about 31323.0972287224. The cubic root of 981136420 is about 993.6721831924.

The spelling of 981136420 in words is "nine hundred eighty-one million, one hundred thirty-six thousand, four hundred twenty".