911261428 has 72 divisors (see below), whose sum is σ = 2052558144. Its totient is φ = 349977600.

The previous prime is 911261423. The next prime is 911261437. The reversal of 911261428 is 824162119.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 911261393 and 911261402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (911261423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150100 + ... + 156052.

It is an arithmetic number, because the mean of its divisors is an integer number (28507752).

Almost surely, 2^911261428 is an apocalyptic number.

911261428 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 911261428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1026279072).

911261428 is an abundant number, since it is smaller than the sum of its proper divisors (1141296716).

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

911261428 is a wasteful number, since it uses less digits than its factorization.

911261428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6053 (or 6044 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 911261428 is about 30187.1069829489. The cubic root of 911261428 is about 969.4996633171.

The spelling of 911261428 in words is "nine hundred eleven million, two hundred sixty-one thousand, four hundred twenty-eight".