55928730 has 64 divisors (see below), whose sum is σ = 157707648. Its totient is φ = 12514560.

The previous prime is 55928713. The next prime is 55928737. The reversal of 55928730 is 3782955.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (55928737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2229 + ... + 10808.

It is an arithmetic number, because the mean of its divisors is an integer number (2464182).

Almost surely, 2^55928730 is an apocalyptic number.

55928730 is an abundant number, since it is smaller than the sum of its proper divisors (101778918).

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

55928730 is a wasteful number, since it uses less digits than its factorization.

55928730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13071.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 55928730 is about 7478.5513303046. The cubic root of 55928730 is about 382.4238645509.

The spelling of 55928730 in words is "fifty-five million, nine hundred twenty-eight thousand, seven hundred thirty".