105400644 has 24 divisors (see below), whose sum is σ = 247298688. Its totient is φ = 34938720.

The previous prime is 105400613. The next prime is 105400667. The reversal of 105400644 is 446004501.

It is a super-2 number, since 2×105400644² = 22218591511229472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22092 + ... + 26435.

It is an arithmetic number, because the mean of its divisors is an integer number (10304112).

Almost surely, 2^105400644 is an apocalyptic number.

It is an amenable number.

105400644 is an abundant number, since it is smaller than the sum of its proper divisors (141898044).

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

105400644 is a wasteful number, since it uses less digits than its factorization.

105400644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48715 (or 48713 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 105400644 is about 10266.4815784182. The cubic root of 105400644 is about 472.3686732250.

The spelling of 105400644 in words is "one hundred five million, four hundred thousand, six hundred forty-four".