102691398 has 16 divisors (see below), whose sum is σ = 205504560. Its totient is φ = 34210176.

The previous prime is 102691397. The next prime is 102691403. The reversal of 102691398 is 893196201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102691397) 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, 8818 + ... + 16826.

It is an arithmetic number, because the mean of its divisors is an integer number (12844035).

Almost surely, 2^102691398 is an apocalyptic number.

102691398 is an abundant number, since it is smaller than the sum of its proper divisors (102813162).

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

102691398 is a wasteful number, since it uses less digits than its factorization.

102691398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10151.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 102691398 is about 10133.6764305952. The cubic root of 102691398 is about 468.2861953911.

The spelling of 102691398 in words is "one hundred two million, six hundred ninety-one thousand, three hundred ninety-eight".