406572703240 has 64 divisors (see below), whose sum is σ = 1016780506560. Its totient is φ = 145055089920.

The previous prime is 406572703237. The next prime is 406572703241. The reversal of 406572703240 is 42307275604.

It is a happy number.

It is a super-2 number, since 2×406572703240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 406572703193 and 406572703202.

It is not an unprimeable number, because it can be changed into a prime (406572703241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8693934 + ... + 8740573.

It is an arithmetic number, because the mean of its divisors is an integer number (15887195415).

Almost surely, 2^406572703240 is an apocalyptic number.

406572703240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406572703240 is an abundant number, since it is smaller than the sum of its proper divisors (610207803320).

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

406572703240 is a wasteful number, since it uses less digits than its factorization.

406572703240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17434582 (or 17434578 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 40.

Adding to 406572703240 its reverse (42307275604), we get a palindrome (448879978844).

The spelling of 406572703240 in words is "four hundred six billion, five hundred seventy-two million, seven hundred three thousand, two hundred forty".