97956378 has 80 divisors (see below), whose sum is σ = 238589736. Its totient is φ = 29859840.

The previous prime is 97956371. The next prime is 97956401. The reversal of 97956378 is 87365979.

97956378 is a `hidden beast` number, since 9 + 7 + 9 + 563 + 78 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 67519089 + 30437289 = 8217^2 + 5517^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (97956371) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 406338 + ... + 406578.

Almost surely, 2^97956378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97956378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119294868).

97956378 is an abundant number, since it is smaller than the sum of its proper divisors (140633358).

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

97956378 is a wasteful number, since it uses less digits than its factorization.

97956378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 452 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 97956378 is about 9897.2914476639. The cubic root of 97956378 is about 460.9752120971.

The spelling of 97956378 in words is "ninety-seven million, nine hundred fifty-six thousand, three hundred seventy-eight".