97151320 has 128 divisors (see below), whose sum is σ = 261072000. Its totient is φ = 32514048.

The previous prime is 97151309. The next prime is 97151321. The reversal of 97151320 is 2315179.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97151321) 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 31 ways as a sum of consecutive naturals, for example, 1001512 + ... + 1001608.

It is an arithmetic number, because the mean of its divisors is an integer number (2039625).

Almost surely, 2^97151320 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 97151320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130536000).

97151320 is an abundant number, since it is smaller than the sum of its proper divisors (163920680).

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

97151320 is a wasteful number, since it uses less digits than its factorization.

97151320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 97151320 is about 9856.5369171936. The cubic root of 97151320 is about 459.7088895340.

Adding to 97151320 its reverse (2315179), we get a palindrome (99466499).

The spelling of 97151320 in words is "ninety-seven million, one hundred fifty-one thousand, three hundred twenty".