406722330 has 64 divisors (see below), whose sum is σ = 1239540480. Its totient is φ = 92964672.

The previous prime is 406722311. The next prime is 406722343. The reversal of 406722330 is 33227604.

406722330 is a `hidden beast` number, since 406 + 7 + 223 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 406722294 and 406722303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105709 + ... + 109488.

It is an arithmetic number, because the mean of its divisors is an integer number (19367820).

Almost surely, 2^406722330 is an apocalyptic number.

406722330 is an abundant number, since it is smaller than the sum of its proper divisors (832818150).

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

406722330 is a wasteful number, since it uses less digits than its factorization.

406722330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215220 (or 215214 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 406722330 is about 20167.3580322262. The cubic root of 406722330 is about 740.9109368608.

Adding to 406722330 its reverse (33227604), we get a palindrome (439949934).

The spelling of 406722330 in words is "four hundred six million, seven hundred twenty-two thousand, three hundred thirty".