97049778 has 64 divisors (see below), whose sum is σ = 231137280. Its totient is φ = 26582400.

The previous prime is 97049773. The next prime is 97049791. The reversal of 97049778 is 87794079.

It is a self number, because there is not a number n which added to its sum of digits gives 97049778.

It is not an unprimeable number, because it can be changed into a prime (97049773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170278 + ... + 170846.

It is an arithmetic number, because the mean of its divisors is an integer number (3611520).

Almost surely, 2^97049778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97049778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115568640).

97049778 is an abundant number, since it is smaller than the sum of its proper divisors (134087502).

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

97049778 is a wasteful number, since it uses less digits than its factorization.

97049778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 97049778 is about 9851.3845727390. The cubic root of 97049778 is about 459.5486720071.

The spelling of 97049778 in words is "ninety-seven million, forty-nine thousand, seven hundred seventy-eight".