102730356 has 60 divisors (see below), whose sum is σ = 269681412. Its totient is φ = 34100352.

The previous prime is 102730343. The next prime is 102730361. The reversal of 102730356 is 653037201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 396900 + 102333456 = 630^2 + 10116^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 100906 + ... + 101918.

Almost surely, 2^102730356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102730356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134840706).

102730356 is an abundant number, since it is smaller than the sum of its proper divisors (166951056).

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

102730356 is a wasteful number, since it uses less digits than its factorization.

102730356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 102730356 is about 10135.5984529775. The cubic root of 102730356 is about 468.3454057613.

Adding to 102730356 its reverse (653037201), we get a palindrome (755767557).

The spelling of 102730356 in words is "one hundred two million, seven hundred thirty thousand, three hundred fifty-six".