7434939780 has 168 divisors, whose sum is σ = 24642340800. Its totient is φ = 1878230592.

The previous prime is 7434939769. The next prime is 7434939793. The reversal of 7434939780 is 879394347.

7434939780 is a `hidden beast` number, since 74 + 3 + 493 + 9 + 7 + 80 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 263601 + ... + 290439.

It is an arithmetic number, because the mean of its divisors is an integer number (146680600).

Almost surely, 2^7434939780 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 7434939780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12321170400).

7434939780 is an abundant number, since it is smaller than the sum of its proper divisors (17207401020).

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

7434939780 is a wasteful number, since it uses less digits than its factorization.

7434939780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26885 (or 26868 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The square root of 7434939780 is about 86226.0968616810. The cubic root of 7434939780 is about 1951.7573270754.

The spelling of 7434939780 in words is "seven billion, four hundred thirty-four million, nine hundred thirty-nine thousand, seven hundred eighty".