36400040728 has 16 divisors (see below), whose sum is σ = 68262697080. Its totient is φ = 18196654848.

The previous prime is 36400040683. The next prime is 36400040749. The reversal of 36400040728 is 82704000463.

It is a super-3 number, since 3×36400040728³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36400040693 and 36400040702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374425 + ... + 461512.

Almost surely, 2^36400040728 is an apocalyptic number.

It is an amenable number.

36400040728 is a deficient number, since it is larger than the sum of its proper divisors (31862656352).

36400040728 is a wasteful number, since it uses less digits than its factorization.

36400040728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841386 (or 841382 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 36400040728 in words is "thirty-six billion, four hundred million, forty thousand, seven hundred twenty-eight".