102230778 has 32 divisors (see below), whose sum is σ = 226146816. Its totient is φ = 30604608.

The previous prime is 102230767. The next prime is 102230789. The reversal of 102230778 is 877032201.

It is an interprime number because it is at equal distance from previous prime (102230767) and next prime (102230789).

It is a super-2 number, since 2×102230778² = 20902263940970568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14826 + ... + 20597.

It is an arithmetic number, because the mean of its divisors is an integer number (7067088).

Almost surely, 2^102230778 is an apocalyptic number.

102230778 is an abundant number, since it is smaller than the sum of its proper divisors (123916038).

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

102230778 is a wasteful number, since it uses less digits than its factorization.

102230778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35478.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 102230778 is about 10110.9236966758. The cubic root of 102230778 is about 467.5849834543.

Adding to 102230778 its reverse (877032201), we get a palindrome (979262979).

The spelling of 102230778 in words is "one hundred two million, two hundred thirty thousand, seven hundred seventy-eight".