406245540 has 48 divisors (see below), whose sum is σ = 1143475200. Its totient is φ = 107761920.

The previous prime is 406245523. The next prime is 406245551. The reversal of 406245540 is 45542604.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 406245498 and 406245507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6265 + ... + 29184.

It is an arithmetic number, because the mean of its divisors is an integer number (23822400).

Almost surely, 2^406245540 is an apocalyptic number.

It is an amenable number.

406245540 is an abundant number, since it is smaller than the sum of its proper divisors (737229660).

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

406245540 is a wasteful number, since it uses less digits than its factorization.

406245540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35652 (or 35650 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 406245540 is about 20155.5337314595. The cubic root of 406245540 is about 740.6213067878.

It can be divided in two parts, 40624 and 5540, that added together give a palindrome (46164).

The spelling of 406245540 in words is "four hundred six million, two hundred forty-five thousand, five hundred forty".