7428784734 has 48 divisors (see below), whose sum is σ = 18422232192. Its totient is φ = 2119377744.

The previous prime is 7428784733. The next prime is 7428784807. The reversal of 7428784734 is 4374878247.

It is a super-2 number, since 2×7428784734² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428784733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42897 + ... + 129219.

It is an arithmetic number, because the mean of its divisors is an integer number (383796504).

Almost surely, 2^7428784734 is an apocalyptic number.

7428784734 is an abundant number, since it is smaller than the sum of its proper divisors (10993447458).

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

7428784734 is a wasteful number, since it uses less digits than its factorization.

7428784734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87021 (or 87018 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 54.

The square root of 7428784734 is about 86190.3981543188. The cubic root of 7428784734 is about 1951.2185882262.

The spelling of 7428784734 in words is "seven billion, four hundred twenty-eight million, seven hundred eighty-four thousand, seven hundred thirty-four".