105450390 has 64 divisors (see below), whose sum is σ = 286545600. Its totient is φ = 27585792.

The previous prime is 105450379. The next prime is 105450451. The reversal of 105450390 is 93054501.

It is a super-2 number, since 2×105450390² = 22239569502304200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10626 + ... + 17994.

It is an arithmetic number, because the mean of its divisors is an integer number (4477275).

Almost surely, 2^105450390 is an apocalyptic number.

105450390 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 105450390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143272800).

105450390 is an abundant number, since it is smaller than the sum of its proper divisors (181095210).

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

105450390 is a wasteful number, since it uses less digits than its factorization.

105450390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7438 (or 7432 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 105450390 is about 10268.9040311028. The cubic root of 105450390 is about 472.4429762375.

The spelling of 105450390 in words is "one hundred five million, four hundred fifty thousand, three hundred ninety".