406861128 has 48 divisors (see below), whose sum is σ = 1112845500. Its totient is φ = 134275200.

The previous prime is 406861127. The next prime is 406861157. The reversal of 406861128 is 821168604.

It can be written as a sum of positive squares in 2 ways, for example, as 396089604 + 10771524 = 19902^2 + 3282^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 406861092 and 406861101.

It is not an unprimeable number, because it can be changed into a prime (406861121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20703 + ... + 35246.

Almost surely, 2^406861128 is an apocalyptic number.

It is an amenable number.

406861128 is an abundant number, since it is smaller than the sum of its proper divisors (705984372).

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

406861128 is a wasteful number, since it uses less digits than its factorization.

406861128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56062 (or 56055 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 406861128 is about 20170.7988934499. The cubic root of 406861128 is about 740.9952083263.

It can be divided in two parts, 40686 and 1128, that added together give a palindrome (41814).

The spelling of 406861128 in words is "four hundred six million, eight hundred sixty-one thousand, one hundred twenty-eight".