780420438 has 24 divisors (see below), whose sum is σ = 1932469968. Its totient is φ = 222977232.

The previous prime is 780420437. The next prime is 780420439. The reversal of 780420438 is 834024087.

It is an interprime number because it is at equal distance from previous prime (780420437) and next prime (780420439).

It is a super-2 number, since 2×780420438² = 1218112120096223688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780420437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3096781 + ... + 3097032.

It is an arithmetic number, because the mean of its divisors is an integer number (80519582).

Almost surely, 2^780420438 is an apocalyptic number.

780420438 is an abundant number, since it is smaller than the sum of its proper divisors (1152049530).

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

780420438 is a wasteful number, since it uses less digits than its factorization.

780420438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6193828 (or 6193825 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 780420438 is about 27936.0061211334. The cubic root of 780420438 is about 920.6817717391.

The spelling of 780420438 in words is "seven hundred eighty million, four hundred twenty thousand, four hundred thirty-eight".