102591830 has 64 divisors (see below), whose sum is σ = 213995520. Its totient is φ = 35020800.

The previous prime is 102591823. The next prime is 102591833. The reversal of 102591830 is 38195201.

It is a junction number, because it is equal to n+sod(n) for n = 102591793 and 102591802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102591833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399062 + ... + 399318.

It is an arithmetic number, because the mean of its divisors is an integer number (3343680).

Almost surely, 2^102591830 is an apocalyptic number.

102591830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102591830 is an abundant number, since it is smaller than the sum of its proper divisors (111403690).

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

102591830 is a wasteful number, since it uses less digits than its factorization.

102591830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 102591830 is about 10128.7625107907. The cubic root of 102591830 is about 468.1347987525.

The spelling of 102591830 in words is "one hundred two million, five hundred ninety-one thousand, eight hundred thirty".