400702262472 has 156 divisors (see below), whose sum is σ = 1130657290155. Its totient is φ = 133132347792.

The previous prime is 400702262393. The next prime is 400702262479. The reversal of 400702262472 is 274262207004.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

400702262472 is a `hidden beast` number, since 4 + 0 + 0 + 7 + 0 + 22 + 624 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 200351131236 + 200351131236 = 447606^2 + 447606^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=447606.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (400702262479) by changing a digit.

It is a polite number, since it can be written in 38 ways as a sum of consecutive naturals, for example, 1305218943 + ... + 1305219249.

Almost surely, 2^400702262472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400702262472

400702262472 is an abundant number, since it is smaller than the sum of its proper divisors (729955027683).

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

400702262472 is an frugal number, since it uses more digits than its factorization.

400702262472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

Adding to 400702262472 its reverse (274262207004), we get a palindrome (674964469476).

The spelling of 400702262472 in words is "four hundred billion, seven hundred two million, two hundred sixty-two thousand, four hundred seventy-two".