109277640 has 64 divisors (see below), whose sum is σ = 364262400. Its totient is φ = 29140416.

The previous prime is 109277627. The next prime is 109277647. The reversal of 109277640 is 46772901.

It is a happy number.

109277640 is a `hidden beast` number, since 1 + 0 + 9 + 2 + 7 + 7 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 109277595 and 109277604.

It is not an unprimeable number, because it can be changed into a prime (109277647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49512 + ... + 51671.

It is an arithmetic number, because the mean of its divisors is an integer number (5691600).

Almost surely, 2^109277640 is an apocalyptic number.

109277640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109277640 is an abundant number, since it is smaller than the sum of its proper divisors (254984760).

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

109277640 is a wasteful number, since it uses less digits than its factorization.

109277640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101203 (or 101193 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 109277640 is about 10453.5945970752. The cubic root of 109277640 is about 478.0908541551.

The spelling of 109277640 in words is "one hundred nine million, two hundred seventy-seven thousand, six hundred forty".