10981390 has 48 divisors (see below), whose sum is σ = 23384592. Its totient is φ = 3701376.

The previous prime is 10981379. The next prime is 10981391. The reversal of 10981390 is 9318901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10981391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35617 + ... + 35923.

It is an arithmetic number, because the mean of its divisors is an integer number (487179).

Almost surely, 2^10981390 is an apocalyptic number.

10981390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10981390 is an abundant number, since it is smaller than the sum of its proper divisors (12403202).

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

10981390 is a wasteful number, since it uses less digits than its factorization.

10981390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 10981390 is about 3313.8180396636. The cubic root of 10981390 is about 222.2725192632.

The spelling of 10981390 in words is "ten million, nine hundred eighty-one thousand, three hundred ninety".