102947830 has 8 divisors (see below), whose sum is σ = 185306112. Its totient is φ = 41179128.

The previous prime is 102947827. The next prime is 102947837. The reversal of 102947830 is 38749201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102947837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5147382 + ... + 5147401.

It is an arithmetic number, because the mean of its divisors is an integer number (23163264).

Almost surely, 2^102947830 is an apocalyptic number.

102947830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102947830 is a deficient number, since it is larger than the sum of its proper divisors (82358282).

102947830 is a wasteful number, since it uses less digits than its factorization.

102947830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10294790.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 102947830 is about 10146.3210081290. The cubic root of 102947830 is about 468.6756592032.

The spelling of 102947830 in words is "one hundred two million, nine hundred forty-seven thousand, eight hundred thirty".