40274728 has 24 divisors (see below), whose sum is σ = 81773550. Its totient is φ = 18587712.

The previous prime is 40274719. The next prime is 40274747. The reversal of 40274728 is 82747204.

It can be written as a sum of positive squares in 3 ways, for example, as 8892324 + 31382404 = 2982^2 + 5602^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40274693 and 40274702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13543 + ... + 16246.

Almost surely, 2^40274728 is an apocalyptic number.

It is an amenable number.

40274728 is an abundant number, since it is smaller than the sum of its proper divisors (41498822).

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

40274728 is a wasteful number, since it uses less digits than its factorization.

40274728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29821 (or 29804 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 40274728 is about 6346.2373104069. The cubic root of 40274728 is about 342.7763674130.

The spelling of 40274728 in words is "forty million, two hundred seventy-four thousand, seven hundred twenty-eight".