406740740 has 48 divisors (see below), whose sum is σ = 1018628352. Its totient is φ = 133389696.

The previous prime is 406740727. The next prime is 406740751. The reversal of 406740740 is 47047604.

It is a junction number, because it is equal to n+sod(n) for n = 406740697 and 406740706.

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, 59939 + ... + 66378.

It is an arithmetic number, because the mean of its divisors is an integer number (21221424).

Almost surely, 2^406740740 is an apocalyptic number.

It is an amenable number.

406740740 is an abundant number, since it is smaller than the sum of its proper divisors (611887612).

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

406740740 is a wasteful number, since it uses less digits than its factorization.

406740740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126356 (or 126354 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 406740740 is about 20167.8144576947. The cubic root of 406740740 is about 740.9221156295.

The spelling of 406740740 in words is "four hundred six million, seven hundred forty thousand, seven hundred forty".