102725330 has 16 divisors (see below), whose sum is σ = 185151960. Its totient is φ = 41035392.

The previous prime is 102725317. The next prime is 102725333. The reversal of 102725330 is 33527201.

It can be written as a sum of positive squares in 4 ways, for example, as 87740689 + 14984641 = 9367^2 + 3871^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102725296 and 102725305.

It is not an unprimeable number, because it can be changed into a prime (102725333) 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, 1526 + ... + 14414.

Almost surely, 2^102725330 is an apocalyptic number.

102725330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102725330 is a deficient number, since it is larger than the sum of its proper divisors (82426630).

102725330 is a wasteful number, since it uses less digits than its factorization.

102725330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13693.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 102725330 is about 10135.3505119458. The cubic root of 102725330 is about 468.3377678294.

The spelling of 102725330 in words is "one hundred two million, seven hundred twenty-five thousand, three hundred thirty".