406022840 has 32 divisors (see below), whose sum is σ = 914124960. Its totient is φ = 162307200.

The previous prime is 406022839. The next prime is 406022873. The reversal of 406022840 is 48220604.

406022840 = 5030² + 5031² + ... + 5045².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125645 + ... + 128835.

It is an arithmetic number, because the mean of its divisors is an integer number (28566405).

Almost surely, 2^406022840 is an apocalyptic number.

406022840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406022840 is an abundant number, since it is smaller than the sum of its proper divisors (508102120).

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

406022840 is a wasteful number, since it uses less digits than its factorization.

406022840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383 (or 6379 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 406022840 is about 20150.0084367228. The cubic root of 406022840 is about 740.4859481629.

The spelling of 406022840 in words is "four hundred six million, twenty-two thousand, eight hundred forty".