97847538 has 32 divisors (see below), whose sum is σ = 201362112. Its totient is φ = 31684800.

The previous prime is 97847513. The next prime is 97847539. The reversal of 97847538 is 83574879.

It is a super-2 number, since 2×97847538² = 19148281385322888, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97847539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28768 + ... + 31988.

It is an arithmetic number, because the mean of its divisors is an integer number (6292566).

Almost surely, 2^97847538 is an apocalyptic number.

97847538 is an abundant number, since it is smaller than the sum of its proper divisors (103514574).

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

97847538 is a wasteful number, since it uses less digits than its factorization.

97847538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370.

The product of its digits is 1693440, while the sum is 51.

The square root of 97847538 is about 9891.7914454360. The cubic root of 97847538 is about 460.8044179234.

It can be divided in two parts, 978 and 47538, that added together give a triangular number (48516 = T₃₁₁).

The spelling of 97847538 in words is "ninety-seven million, eight hundred forty-seven thousand, five hundred thirty-eight".