406301778 has 16 divisors (see below), whose sum is σ = 902892960. Its totient is φ = 135433908.

The previous prime is 406301767. The next prime is 406301801. The reversal of 406301778 is 877103604.

406301778 is a `hidden beast` number, since 4 + 0 + 630 + 17 + 7 + 8 = 666.

It is a super-2 number, since 2×406301778² = 330162269611922568, which contains 22 as substring.

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, 3762000 + ... + 3762107.

It is an arithmetic number, because the mean of its divisors is an integer number (56430810).

Almost surely, 2^406301778 is an apocalyptic number.

406301778 is an abundant number, since it is smaller than the sum of its proper divisors (496591182).

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

406301778 is a wasteful number, since it uses less digits than its factorization.

406301778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7524118 (or 7524112 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 406301778 is about 20156.9287839194. The cubic root of 406301778 is about 740.6554808157.

The spelling of 406301778 in words is "four hundred six million, three hundred one thousand, seven hundred seventy-eight".