10381998 has 16 divisors (see below), whose sum is σ = 22651776. Its totient is φ = 3146040.

The previous prime is 10381991. The next prime is 10382003. The reversal of 10381998 is 89918301.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10381991) 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, 78586 + ... + 78717.

It is an arithmetic number, because the mean of its divisors is an integer number (1415736).

Almost surely, 2^10381998 is an apocalyptic number.

10381998 is an abundant number, since it is smaller than the sum of its proper divisors (12269778).

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

10381998 is a wasteful number, since it uses less digits than its factorization.

10381998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157319.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 10381998 is about 3222.1107988398. The cubic root of 10381998 is about 218.1525599340.

The spelling of 10381998 in words is "ten million, three hundred eighty-one thousand, nine hundred ninety-eight".