786790420 has 48 divisors (see below), whose sum is σ = 1788505488. Its totient is φ = 289013760.

The previous prime is 786790409. The next prime is 786790421. The reversal of 786790420 is 24097687.

786790420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 29550096 + 757240324 = 5436^2 + 27518^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786790421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43540 + ... + 58900.

It is an arithmetic number, because the mean of its divisors is an integer number (37260531).

Almost surely, 2^786790420 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 786790420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894252744).

786790420 is an abundant number, since it is smaller than the sum of its proper divisors (1001715068).

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

786790420 is a wasteful number, since it uses less digits than its factorization.

786790420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15580 (or 15578 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 786790420 is about 28049.7846694052. The cubic root of 786790420 is about 923.1799302321.

The spelling of 786790420 in words is "seven hundred eighty-six million, seven hundred ninety thousand, four hundred twenty".