106921390 has 16 divisors (see below), whose sum is σ = 192583008. Its totient is φ = 42740896.

The previous prime is 106921369. The next prime is 106921403. The reversal of 106921390 is 93129601.

It is a super-2 number, since 2×106921390² = 22864367279064200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21039 + ... + 25621.

It is an arithmetic number, because the mean of its divisors is an integer number (12036438).

Almost surely, 2^106921390 is an apocalyptic number.

106921390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

106921390 is a deficient number, since it is larger than the sum of its proper divisors (85661618).

106921390 is a wasteful number, since it uses less digits than its factorization.

106921390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6923.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 106921390 is about 10340.2799768672. The cubic root of 106921390 is about 474.6296503778.

The spelling of 106921390 in words is "one hundred six million, nine hundred twenty-one thousand, three hundred ninety".