102661230 has 64 divisors (see below), whose sum is σ = 283691520. Its totient is φ = 23289984.

The previous prime is 102661217. The next prime is 102661241. The reversal of 102661230 is 32166201.

It is a happy number.

It is a super-2 number, since 2×102661230² = 21078656290225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 102661197 and 102661206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27432 + ... + 30948.

It is an arithmetic number, because the mean of its divisors is an integer number (4432680).

Almost surely, 2^102661230 is an apocalyptic number.

102661230 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 102661230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141845760).

102661230 is an abundant number, since it is smaller than the sum of its proper divisors (181030290).

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

102661230 is a wasteful number, since it uses less digits than its factorization.

102661230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 102661230 is about 10132.1878190251. The cubic root of 102661230 is about 468.2403342257.

The spelling of 102661230 in words is "one hundred two million, six hundred sixty-one thousand, two hundred thirty".