97731744 has 96 divisors (see below), whose sum is σ = 294658560. Its totient is φ = 28051200.

The previous prime is 97731727. The next prime is 97731749. The reversal of 97731744 is 44713779.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 97731696 and 97731705.

It is not an unprimeable number, because it can be changed into a prime (97731749) 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 15 ways as a sum of consecutive naturals, for example, 17629 + ... + 22499.

It is an arithmetic number, because the mean of its divisors is an integer number (3069360).

Almost surely, 2^97731744 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 97731744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147329280).

97731744 is an abundant number, since it is smaller than the sum of its proper divisors (196926816).

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

97731744 is a wasteful number, since it uses less digits than its factorization.

97731744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914 (or 4906 counting only the distinct ones).

The product of its digits is 148176, while the sum is 42.

The square root of 97731744 is about 9885.9366779279. The cubic root of 97731744 is about 460.6225722683.

The spelling of 97731744 in words is "ninety-seven million, seven hundred thirty-one thousand, seven hundred forty-four".