400272730650 has 120 divisors (see below), whose sum is σ = 1197716520924. Its totient is φ = 98528659200.

The previous prime is 400272730621. The next prime is 400272730657. The reversal of 400272730650 is 56037272004.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 31183674921 + 369089055729 = 176589^2 + 607527^2 .

It is not an unprimeable number, because it can be changed into a prime (400272730657) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3748611 + ... + 3853910.

Almost surely, 2^400272730650 is an apocalyptic number.

400272730650 is an abundant number, since it is smaller than the sum of its proper divisors (797443790274).

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

400272730650 is a wasteful number, since it uses less digits than its factorization.

400272730650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7602558 (or 7602544 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The spelling of 400272730650 in words is "four hundred billion, two hundred seventy-two million, seven hundred thirty thousand, six hundred fifty".