406728084 has 48 divisors (see below), whose sum is σ = 1086680448. Its totient is φ = 115986048.

The previous prime is 406728071. The next prime is 406728089. The reversal of 406728084 is 480827604.

It is a super-2 number, since 2×406728084² = 330855468628622112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406728089) 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, 42442 + ... + 51134.

It is an arithmetic number, because the mean of its divisors is an integer number (22639176).

Almost surely, 2^406728084 is an apocalyptic number.

It is an amenable number.

406728084 is an abundant number, since it is smaller than the sum of its proper divisors (679952364).

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

406728084 is a wasteful number, since it uses less digits than its factorization.

406728084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9264 (or 9262 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 406728084 is about 20167.5006879881. The cubic root of 406728084 is about 740.9144307935.

The spelling of 406728084 in words is "four hundred six million, seven hundred twenty-eight thousand, eighty-four".