56278730 has 8 divisors (see below), whose sum is σ = 101301732. Its totient is φ = 22511488.

The previous prime is 56278709. The next prime is 56278751. The reversal of 56278730 is 3787265.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56278709) and next prime (56278751).

It can be written as a sum of positive squares in 2 ways, for example, as 52519009 + 3759721 = 7247^2 + 1939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 2813927 + ... + 2813946.

Almost surely, 2^56278730 is an apocalyptic number.

56278730 is a deficient number, since it is larger than the sum of its proper divisors (45023002).

56278730 is a wasteful number, since it uses less digits than its factorization.

56278730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627880.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 56278730 is about 7501.9150888290. The cubic root of 56278730 is about 383.2199378939.

The spelling of 56278730 in words is "fifty-six million, two hundred seventy-eight thousand, seven hundred thirty".