10018890 has 192 divisors, whose sum is σ = 33546240. Its totient is φ = 2099520.

The previous prime is 10018873. The next prime is 10018907. The reversal of 10018890 is 9881001.

It is an interprime number because it is at equal distance from previous prime (10018873) and next prime (10018907).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 323175 + ... + 323205.

It is an arithmetic number, because the mean of its divisors is an integer number (174720).

Almost surely, 2^10018890 is an apocalyptic number.

10018890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10018890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16773120).

10018890 is an abundant number, since it is smaller than the sum of its proper divisors (23527350).

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

10018890 is a wasteful number, since it uses less digits than its factorization.

10018890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 10018890 is about 3165.2630222463. The cubic root of 10018890 is about 215.5790412446.

Adding to 10018890 its reverse (9881001), we get a palindrome (19899891).

The spelling of 10018890 in words is "ten million, eighteen thousand, eight hundred ninety".