400536032528 has 10 divisors (see below), whose sum is σ = 776038563054. Its totient is φ = 200268016256.

The previous prime is 400536032521. The next prime is 400536032531. The reversal of 400536032528 is 825230635004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 312025022464 + 88511010064 = 558592^2 + 297508^2 .

It is a super-2 number, since 2×400536032528² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400536032491 and 400536032500.

It is not an unprimeable number, because it can be changed into a prime (400536032521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12516751001 + ... + 12516751032.

Almost surely, 2^400536032528 is an apocalyptic number.

It is an amenable number.

400536032528 is a deficient number, since it is larger than the sum of its proper divisors (375502530526).

400536032528 is a wasteful number, since it uses less digits than its factorization.

400536032528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25033502041 (or 25033502035 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 400536032528 in words is "four hundred billion, five hundred thirty-six million, thirty-two thousand, five hundred twenty-eight".