974778948 has 144 divisors (see below), whose sum is σ = 3002440896. Its totient is φ = 272626560.

The previous prime is 974778901. The next prime is 974778953. The reversal of 974778948 is 849877479.

It is a happy number.

It is a super-3 number, since 3×974778948³ (a number of 28 digits) contains 333 as substring.

Its product of digits (28449792) is a multiple of the sum of its prime factors (7056).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135490 + ... + 142502.

It is an arithmetic number, because the mean of its divisors is an integer number (20850284).

Almost surely, 2^974778948 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 974778948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501220448).

974778948 is an abundant number, since it is smaller than the sum of its proper divisors (2027661948).

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

974778948 is a wasteful number, since it uses less digits than its factorization.

974778948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056 (or 7042 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 974778948 is about 31221.4501264755. The cubic root of 974778948 is about 991.5212974431.

The spelling of 974778948 in words is "nine hundred seventy-four million, seven hundred seventy-eight thousand, nine hundred forty-eight".