291402472074 has 96 divisors (see below), whose sum is σ = 701628868800. Its totient is φ = 80353163520.

The previous prime is 291402472027. The next prime is 291402472087. The reversal of 291402472074 is 470274204192.

It is a super-2 number, since 2×291402472074² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25734334 + ... + 25745654.

It is an arithmetic number, because the mean of its divisors is an integer number (7308634050).

Almost surely, 2^291402472074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 291402472074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350814434400).

291402472074 is an abundant number, since it is smaller than the sum of its proper divisors (410226396726).

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

291402472074 is a wasteful number, since it uses less digits than its factorization.

291402472074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14388 (or 14381 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 291402472074 in words is "two hundred ninety-one billion, four hundred two million, four hundred seventy-two thousand, seventy-four".