97287140 has 24 divisors (see below), whose sum is σ = 204614592. Its totient is φ = 38855520.

The previous prime is 97287089. The next prime is 97287143. The reversal of 97287140 is 4178279.

It is a junction number, because it is equal to n+sod(n) for n = 97287094 and 97287103.

It is not an unprimeable number, because it can be changed into a prime (97287143) 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, 11195 + ... + 17885.

It is an arithmetic number, because the mean of its divisors is an integer number (8525608).

Almost surely, 2^97287140 is an apocalyptic number.

It is an amenable number.

97287140 is an abundant number, since it is smaller than the sum of its proper divisors (107327452).

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

97287140 is a wasteful number, since it uses less digits than its factorization.

97287140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7427 (or 7425 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 97287140 is about 9863.4243546549. The cubic root of 97287140 is about 459.9230179935.

The spelling of 97287140 in words is "ninety-seven million, two hundred eighty-seven thousand, one hundred forty".