781000234 has 8 divisors (see below), whose sum is σ = 1338857568. Its totient is φ = 334714380.

The previous prime is 781000229. The next prime is 781000249. The reversal of 781000234 is 432000187.

781000234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×781000234² = 1219922731016109512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 781000199 and 781000208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27892852 + ... + 27892879.

It is an arithmetic number, because the mean of its divisors is an integer number (167357196).

Almost surely, 2^781000234 is an apocalyptic number.

781000234 is a deficient number, since it is larger than the sum of its proper divisors (557857334).

781000234 is a wasteful number, since it uses less digits than its factorization.

781000234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55785740.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 781000234 is about 27946.3814115531. The cubic root of 781000234 is about 920.9097153123.

The spelling of 781000234 in words is "seven hundred eighty-one million, two hundred thirty-four", and thus it is an aban number.