105447972 has 24 divisors (see below), whose sum is σ = 281194816. Its totient is φ = 30127968.

The previous prime is 105447961. The next prime is 105447977. The reversal of 105447972 is 279744501.

It is a super-2 number, since 2×105447972² = 22238549597825568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105447972.

It is not an unprimeable number, because it can be changed into a prime (105447977) 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, 627583 + ... + 627750.

Almost surely, 2^105447972 is an apocalyptic number.

105447972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

105447972 is an abundant number, since it is smaller than the sum of its proper divisors (175746844).

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

105447972 is a wasteful number, since it uses less digits than its factorization.

105447972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255347 (or 1255345 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 105447972 is about 10268.7862963449. The cubic root of 105447972 is about 472.4393651371.

The spelling of 105447972 in words is "one hundred five million, four hundred forty-seven thousand, nine hundred seventy-two".