97191270 has 96 divisors (see below), whose sum is σ = 290234880. Its totient is φ = 22317120.

The previous prime is 97191233. The next prime is 97191271. The reversal of 97191270 is 7219179.

It is a super-2 number, since 2×97191270² = 18892285928425800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97191271) 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 47 ways as a sum of consecutive naturals, for example, 16227 + ... + 21393.

It is an arithmetic number, because the mean of its divisors is an integer number (3023280).

Almost surely, 2^97191270 is an apocalyptic number.

97191270 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 97191270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145117440).

97191270 is an abundant number, since it is smaller than the sum of its proper divisors (193043610).

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

97191270 is a wasteful number, since it uses less digits than its factorization.

97191270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5210 (or 5207 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 97191270 is about 9858.5632827507. The cubic root of 97191270 is about 459.7718938361.

It can be divided in two parts, 97191 and 270, that added together give a triangular number (97461 = T₄₄₁).

The spelling of 97191270 in words is "ninety-seven million, one hundred ninety-one thousand, two hundred seventy".