97251428 has 12 divisors (see below), whose sum is σ = 170565612. Its totient is φ = 48518400.

The previous prime is 97251419. The next prime is 97251437. The reversal of 97251428 is 82415279.

It is an interprime number because it is at equal distance from previous prime (97251419) and next prime (97251437).

It can be written as a sum of positive squares in 2 ways, for example, as 80425024 + 16826404 = 8968^2 + 4102^2 .

It is a junction number, because it is equal to n+sod(n) for n = 97251391 and 97251400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24773 + ... + 28428.

It is an arithmetic number, because the mean of its divisors is an integer number (14213801).

Almost surely, 2^97251428 is an apocalyptic number.

It is an amenable number.

97251428 is a deficient number, since it is larger than the sum of its proper divisors (73314184).

97251428 is a wasteful number, since it uses less digits than its factorization.

97251428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53662 (or 53660 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 97251428 is about 9861.6138638663. The cubic root of 97251428 is about 459.8667351831.

It can be divided in two parts, 97251 and 428, that added together give a palindrome (97679).

The spelling of 97251428 in words is "ninety-seven million, two hundred fifty-one thousand, four hundred twenty-eight".