40723828 has 12 divisors (see below), whose sum is σ = 73193092. Its totient is φ = 19811520.

The previous prime is 40723811. The next prime is 40723829. The reversal of 40723828 is 82832704.

It can be written as a sum of positive squares in 2 ways, for example, as 37234404 + 3489424 = 6102^2 + 1868^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40723793 and 40723802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40723829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137433 + ... + 137728.

Almost surely, 2^40723828 is an apocalyptic number.

It is an amenable number.

40723828 is a deficient number, since it is larger than the sum of its proper divisors (32469264).

40723828 is a wasteful number, since it uses less digits than its factorization.

40723828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275202 (or 275200 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 40723828 is about 6381.5223888975. The cubic root of 40723828 is about 344.0457506304.

The spelling of 40723828 in words is "forty million, seven hundred twenty-three thousand, eight hundred twenty-eight".