102245390 has 32 divisors (see below), whose sum is σ = 203043456. Its totient is φ = 36829440.

The previous prime is 102245389. The next prime is 102245399. The reversal of 102245390 is 93542201.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102245399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4262 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (6345108).

Almost surely, 2^102245390 is an apocalyptic number.

102245390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102245390 is a deficient number, since it is larger than the sum of its proper divisors (100798066).

102245390 is a wasteful number, since it uses less digits than its factorization.

102245390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19244.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 102245390 is about 10111.6462556796. The cubic root of 102245390 is about 467.6072599364.

Adding to 102245390 its reverse (93542201), we get a palindrome (195787591).

The spelling of 102245390 in words is "one hundred two million, two hundred forty-five thousand, three hundred ninety".