36312728 has 8 divisors (see below), whose sum is σ = 68086380. Its totient is φ = 18156360.

The previous prime is 36312721. The next prime is 36312733. The reversal of 36312728 is 82721363.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×36312728² = 2637228429603968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36312694 and 36312703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36312721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269538 + ... + 2269553.

Almost surely, 2^36312728 is an apocalyptic number.

It is an amenable number.

36312728 is a deficient number, since it is larger than the sum of its proper divisors (31773652).

36312728 is a wasteful number, since it uses less digits than its factorization.

36312728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539097 (or 4539093 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 36312728 is about 6026.0043146350. The cubic root of 36312728 is about 331.1460854541.

It can be divided in two parts, 363 and 12728, that multiplied together give a palindrome (4620264).

The spelling of 36312728 in words is "thirty-six million, three hundred twelve thousand, seven hundred twenty-eight".