105971388 has 24 divisors (see below), whose sum is σ = 253298640. Its totient is φ = 34462080.

The previous prime is 105971381. The next prime is 105971413. The reversal of 105971388 is 883179501.

It is a super-2 number, since 2×105971388² = 22459870149293088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105971381) 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, 107203 + ... + 108186.

It is an arithmetic number, because the mean of its divisors is an integer number (10554110).

Almost surely, 2^105971388 is an apocalyptic number.

It is an amenable number.

105971388 is an abundant number, since it is smaller than the sum of its proper divisors (147327252).

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

105971388 is a wasteful number, since it uses less digits than its factorization.

105971388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215437 (or 215435 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 105971388 is about 10294.2405256532. The cubic root of 105971388 is about 473.2197635790.

The spelling of 105971388 in words is "one hundred five million, nine hundred seventy-one thousand, three hundred eighty-eight".