45247428 has 18 divisors (see below), whose sum is σ = 114375534. Its totient is φ = 15082464.

The previous prime is 45247427. The next prime is 45247429. The reversal of 45247428 is 82474254.

45247428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (45247427) and next prime (45247429).

It can be written as a sum of positive squares in only one way, i.e., 23736384 + 21511044 = 4872^2 + 4638^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1256873 = 45247428 / (4 + 5 + 2 + 4 + 7 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 45247392 and 45247401.

It is not an unprimeable number, because it can be changed into a prime (45247427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 628401 + ... + 628472.

Almost surely, 2^45247428 is an apocalyptic number.

It is an amenable number.

45247428 is an abundant number, since it is smaller than the sum of its proper divisors (69128106).

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

45247428 is a wasteful number, since it uses less digits than its factorization.

45247428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256883 (or 1256878 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 45247428 is about 6726.6208455658. The cubic root of 45247428 is about 356.3400466744.

The spelling of 45247428 in words is "forty-five million, two hundred forty-seven thousand, four hundred twenty-eight".