102097428 has 24 divisors (see below), whose sum is σ = 239301888. Its totient is φ = 33878976.

The previous prime is 102097423. The next prime is 102097439. The reversal of 102097428 is 824790201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102097423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16401 + ... + 21752.

It is an arithmetic number, because the mean of its divisors is an integer number (9970912).

Almost surely, 2^102097428 is an apocalyptic number.

It is an amenable number.

102097428 is an abundant number, since it is smaller than the sum of its proper divisors (137204460).

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

102097428 is a wasteful number, since it uses less digits than its factorization.

102097428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38383 (or 38381 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 102097428 is about 10104.3271918520. The cubic root of 102097428 is about 467.3815887777.

The spelling of 102097428 in words is "one hundred two million, ninety-seven thousand, four hundred twenty-eight".