406280916 has 72 divisors (see below), whose sum is σ = 1074854144. Its totient is φ = 129237120.

The previous prime is 406280893. The next prime is 406280921. The reversal of 406280916 is 619082604.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78975 + ... + 83961.

Almost surely, 2^406280916 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 406280916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537427072).

406280916 is an abundant number, since it is smaller than the sum of its proper divisors (668573228).

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

406280916 is a wasteful number, since it uses less digits than its factorization.

406280916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101 (or 5096 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 406280916 is about 20156.4112877268. The cubic root of 406280916 is about 740.6428040157.

The spelling of 406280916 in words is "four hundred six million, two hundred eighty thousand, nine hundred sixteen".