102291630 has 128 divisors (see below), whose sum is σ = 305233920. Its totient is φ = 21409920.

The previous prime is 102291619. The next prime is 102291667. The reversal of 102291630 is 36192201.

It is a self number, because there is not a number n which added to its sum of digits gives 102291630.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123277 + ... + 124103.

It is an arithmetic number, because the mean of its divisors is an integer number (2384640).

Almost surely, 2^102291630 is an apocalyptic number.

102291630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102291630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152616960).

102291630 is an abundant number, since it is smaller than the sum of its proper divisors (202942290).

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

102291630 is a wasteful number, since it uses less digits than its factorization.

102291630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 102291630 is about 10113.9324696183. The cubic root of 102291630 is about 467.6777403790.

The spelling of 102291630 in words is "one hundred two million, two hundred ninety-one thousand, six hundred thirty".