102798810 has 96 divisors (see below), whose sum is σ = 277250688. Its totient is φ = 26409600.

The previous prime is 102798809. The next prime is 102798811. The reversal of 102798810 is 18897201.

It is an interprime number because it is at equal distance from previous prime (102798809) and next prime (102798811).

It is a super-2 number, since 2×102798810² = 21135190674832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102798811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 390739 + ... + 391001.

It is an arithmetic number, because the mean of its divisors is an integer number (2888028).

Almost surely, 2^102798810 is an apocalyptic number.

102798810 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 102798810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138625344).

102798810 is an abundant number, since it is smaller than the sum of its proper divisors (174451878).

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

102798810 is a wasteful number, since it uses less digits than its factorization.

102798810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 102798810 is about 10138.9748002448. The cubic root of 102798810 is about 468.4494094178.

The spelling of 102798810 in words is "one hundred two million, seven hundred ninety-eight thousand, eight hundred ten".