100297640 has 32 divisors (see below), whose sum is σ = 229500000. Its totient is φ = 39438144.

The previous prime is 100297633. The next prime is 100297643. The reversal of 100297640 is 46792001.

It is not an unprimeable number, because it can be changed into a prime (100297643) 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, 18890 + ... + 23609.

It is an arithmetic number, because the mean of its divisors is an integer number (7171875).

Almost surely, 2^100297640 is an apocalyptic number.

100297640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100297640 is an abundant number, since it is smaller than the sum of its proper divisors (129202360).

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

100297640 is a wasteful number, since it uses less digits than its factorization.

100297640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42569 (or 42565 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 100297640 is about 10014.8709427531. The cubic root of 100297640 is about 464.6189347306.

The spelling of 100297640 in words is "one hundred million, two hundred ninety-seven thousand, six hundred forty".