97784340 has 96 divisors (see below), whose sum is σ = 297851904. Its totient is φ = 23869440.

The previous prime is 97784333. The next prime is 97784353. The reversal of 97784340 is 4348779.

It is a junction number, because it is equal to n+sod(n) for n = 97784292 and 97784301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36445 + ... + 39035.

It is an arithmetic number, because the mean of its divisors is an integer number (3102624).

Almost surely, 2^97784340 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 97784340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148925952).

97784340 is an abundant number, since it is smaller than the sum of its proper divisors (200067564).

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

97784340 is a wasteful number, since it uses less digits than its factorization.

97784340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 97784340 is about 9888.5964625927. The cubic root of 97784340 is about 460.7051880731.

The spelling of 97784340 in words is "ninety-seven million, seven hundred eighty-four thousand, three hundred forty".