100297998 has 24 divisors (see below), whose sum is σ = 228750600. Its totient is φ = 31672944.

The previous prime is 100297997. The next prime is 100297999. The reversal of 100297998 is 899792001.

It is an interprime number because it is at equal distance from previous prime (100297997) and next prime (100297999).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100297991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146293 + ... + 146976.

It is an arithmetic number, because the mean of its divisors is an integer number (9531275).

Almost surely, 2^100297998 is an apocalyptic number.

100297998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100297998 is an abundant number, since it is smaller than the sum of its proper divisors (128452602).

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

100297998 is a wasteful number, since it uses less digits than its factorization.

100297998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293296 (or 293293 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 100297998 is about 10014.8888161577. Note that the first 4 decimals coincide. The cubic root of 100297998 is about 464.6194875298.

The spelling of 100297998 in words is "one hundred million, two hundred ninety-seven thousand, nine hundred ninety-eight".