102534390 has 64 divisors (see below), whose sum is σ = 312491520. Its totient is φ = 23436000.

The previous prime is 102534379. The next prime is 102534407. The reversal of 102534390 is 93435201.

It is a super-2 number, since 2×102534390² = 21026602265344200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25236 + ... + 29015.

It is an arithmetic number, because the mean of its divisors is an integer number (4882680).

Almost surely, 2^102534390 is an apocalyptic number.

102534390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102534390 is an abundant number, since it is smaller than the sum of its proper divisors (209957130).

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

102534390 is a wasteful number, since it uses less digits than its factorization.

102534390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54274 (or 54268 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 102534390 is about 10125.9266242651. The cubic root of 102534390 is about 468.0474146570.

Adding to 102534390 its reverse (93435201), we get a palindrome (195969591).

The spelling of 102534390 in words is "one hundred two million, five hundred thirty-four thousand, three hundred ninety".