56729630 has 32 divisors (see below), whose sum is σ = 108380160. Its totient is φ = 21319200.

The previous prime is 56729627. The next prime is 56729633. The reversal of 56729630 is 3692765.

56729630 = T₁₀₄₅ + T₁₀₄₆ + ... + T₁₁₃₉.

It is an interprime number because it is at equal distance from previous prime (56729627) and next prime (56729633).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56729633) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22955 + ... + 25305.

It is an arithmetic number, because the mean of its divisors is an integer number (3386880).

Almost surely, 2^56729630 is an apocalyptic number.

56729630 is a deficient number, since it is larger than the sum of its proper divisors (51650530).

56729630 is a wasteful number, since it uses less digits than its factorization.

56729630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 56729630 is about 7531.9074609291. The cubic root of 56729630 is about 384.2406577028.

The spelling of 56729630 in words is "fifty-six million, seven hundred twenty-nine thousand, six hundred thirty".