102690450 has 192 divisors, whose sum is σ = 304444800. Its totient is φ = 25401600.

The previous prime is 102690449. The next prime is 102690451. The reversal of 102690450 is 54096201.

It is an interprime number because it is at equal distance from previous prime (102690449) and next prime (102690451).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102690451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1683420 + ... + 1683480.

It is an arithmetic number, because the mean of its divisors is an integer number (1585650).

Almost surely, 2^102690450 is an apocalyptic number.

102690450 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 102690450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152222400).

102690450 is an abundant number, since it is smaller than the sum of its proper divisors (201754350).

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

102690450 is a wasteful number, since it uses less digits than its factorization.

102690450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 102690450 is about 10133.6296557551. The cubic root of 102690450 is about 468.2847543853.

The spelling of 102690450 in words is "one hundred two million, six hundred ninety thousand, four hundred fifty".