97901440 has 192 divisors, whose sum is σ = 295253280. Its totient is φ = 30228480.

The previous prime is 97901437. The next prime is 97901449. The reversal of 97901440 is 4410979.

It is a junction number, because it is equal to n+sod(n) for n = 97901396 and 97901405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97901449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2387820 + ... + 2387860.

Almost surely, 2^97901440 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 97901440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147626640).

97901440 is an abundant number, since it is smaller than the sum of its proper divisors (197351840).

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

97901440 is a wasteful number, since it uses less digits than its factorization.

97901440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 97901440 is about 9894.5156526229. The cubic root of 97901440 is about 460.8890179746.

The spelling of 97901440 in words is "ninety-seven million, nine hundred one thousand, four hundred forty".