775985430 has 64 divisors (see below), whose sum is σ = 2038473216. Its totient is φ = 187488000.

The previous prime is 775985429. The next prime is 775985437. The reversal of 775985430 is 34589577.

It is a self number, because there is not a number n which added to its sum of digits gives 775985430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775985437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98850 + ... + 106410.

It is an arithmetic number, because the mean of its divisors is an integer number (31851144).

Almost surely, 2^775985430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775985430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1019236608).

775985430 is an abundant number, since it is smaller than the sum of its proper divisors (1262487786).

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

775985430 is a wasteful number, since it uses less digits than its factorization.

775985430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 775985430 is about 27856.5150368814. The cubic root of 775985430 is about 918.9344271346.

It can be divided in two parts, 77598 and 5430, that added together give a triangular number (83028 = T₄₀₇).

The spelling of 775985430 in words is "seven hundred seventy-five million, nine hundred eighty-five thousand, four hundred thirty".