97428 has 24 divisors (see below), whose sum is σ = 237888. Its totient is φ = 30976.

The previous prime is 97423. The next prime is 97429. The reversal of 97428 is 82479.

It is a junction number, because it is equal to n+sod(n) for n = 97395 and 97404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100 + ... + 452.

It is an arithmetic number, because the mean of its divisors is an integer number (9912).

2⁹⁷⁴²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118944).

97428 is an abundant number, since it is smaller than the sum of its proper divisors (140460).

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

97428 is a wasteful number, since it uses less digits than its factorization.

97428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 97428 is about 312.1345863566. The cubic root of 97428 is about 46.0144881899.

It can be divided in two parts, 974 and 28, that multiplied together give a palindrome (27272).

The spelling of 97428 in words is "ninety-seven thousand, four hundred twenty-eight".