102294390 has 64 divisors (see below), whose sum is σ = 269153280. Its totient is φ = 24675840.

The previous prime is 102294373. The next prime is 102294391. The reversal of 102294390 is 93492201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102294391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78222 + ... + 79518.

It is an arithmetic number, because the mean of its divisors is an integer number (4205520).

Almost surely, 2^102294390 is an apocalyptic number.

102294390 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 102294390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134576640).

102294390 is an abundant number, since it is smaller than the sum of its proper divisors (166858890).

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

102294390 is a wasteful number, since it uses less digits than its factorization.

102294390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 102294390 is about 10114.0689141413. The cubic root of 102294390 is about 467.6819465848.

It can be divided in two parts, 102 and 294390, that added together give a palindrome (294492).

The spelling of 102294390 in words is "one hundred two million, two hundred ninety-four thousand, three hundred ninety".