406546540 has 24 divisors (see below), whose sum is σ = 858690000. Its totient is φ = 161677248.

The previous prime is 406546531. The next prime is 406546549. The reversal of 406546540 is 45645604.

It is an interprime number because it is at equal distance from previous prime (406546531) and next prime (406546549).

It is a junction number, because it is equal to n+sod(n) for n = 406546496 and 406546505.

It is not an unprimeable number, because it can be changed into a prime (406546549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55290 + ... + 62209.

It is an arithmetic number, because the mean of its divisors is an integer number (35778750).

Almost surely, 2^406546540 is an apocalyptic number.

It is an amenable number.

406546540 is an abundant number, since it is smaller than the sum of its proper divisors (452143460).

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

406546540 is a wasteful number, since it uses less digits than its factorization.

406546540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117681 (or 117679 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 406546540 is about 20162.9992808610. Note that the first 3 decimals coincide. The cubic root of 406546540 is about 740.8041781109.

It can be divided in two parts, 4065 and 46540, that added together give a palindrome (50605).

The spelling of 406546540 in words is "four hundred six million, five hundred forty-six thousand, five hundred forty".