836225780 has 48 divisors (see below), whose sum is σ = 1902579840. Its totient is φ = 306895488.

The previous prime is 836225779. The next prime is 836225783. The reversal of 836225780 is 87522638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (836225783) 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, 33791 + ... + 53049.

It is an arithmetic number, because the mean of its divisors is an integer number (39637080).

Almost surely, 2^836225780 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 836225780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (951289920).

836225780 is an abundant number, since it is smaller than the sum of its proper divisors (1066354060).

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

836225780 is a wasteful number, since it uses less digits than its factorization.

836225780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19448 (or 19446 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 836225780 is about 28917.5687083129. The cubic root of 836225780 is about 942.1235302439.

The spelling of 836225780 in words is "eight hundred thirty-six million, two hundred twenty-five thousand, seven hundred eighty".