103020090 has 64 divisors (see below), whose sum is σ = 262224000. Its totient is φ = 25830144.

The previous prime is 103020089. The next prime is 103020097. The reversal of 103020090 is 90020301.

It is a super-2 number, since 2×103020090² = 21226277887216200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (103020097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84324 + ... + 85536.

It is an arithmetic number, because the mean of its divisors is an integer number (4097250).

Almost surely, 2^103020090 is an apocalyptic number.

103020090 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 103020090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131112000).

103020090 is an abundant number, since it is smaller than the sum of its proper divisors (159203910).

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

103020090 is a wasteful number, since it uses less digits than its factorization.

103020090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 103020090 is about 10149.8812800939. The cubic root of 103020090 is about 468.7852894321.

Adding to 103020090 its reverse (90020301), we get a palindrome (193040391).

The spelling of 103020090 in words is "one hundred three million, twenty thousand, ninety".