108640420 has 24 divisors (see below), whose sum is σ = 260737344. Its totient is φ = 37248096.

The previous prime is 108640393. The next prime is 108640439. The reversal of 108640420 is 24046801.

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, 387862 + ... + 388141.

It is an arithmetic number, because the mean of its divisors is an integer number (10864056).

Almost surely, 2^108640420 is an apocalyptic number.

108640420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108640420 is an abundant number, since it is smaller than the sum of its proper divisors (152096924).

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

108640420 is a wasteful number, since it uses less digits than its factorization.

108640420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776019 (or 776017 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 108640420 is about 10423.0715242677. The cubic root of 108640420 is about 477.1597605461.

The spelling of 108640420 in words is "one hundred eight million, six hundred forty thousand, four hundred twenty".