45028378 has 4 divisors (see below), whose sum is σ = 67542570. Its totient is φ = 22514188.

The previous prime is 45028369. The next prime is 45028381. The reversal of 45028378 is 87382054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43652449 + 1375929 = 6607^2 + 1173^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11257093 + ... + 11257096.

Almost surely, 2^45028378 is an apocalyptic number.

45028378 is a deficient number, since it is larger than the sum of its proper divisors (22514192).

45028378 is a wasteful number, since it uses less digits than its factorization.

45028378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22514191.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 45028378 is about 6710.3187703715. The cubic root of 45028378 is about 355.7640832696.

It can be divided in two parts, 4502 and 8378, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 45028378 in words is "forty-five million, twenty-eight thousand, three hundred seventy-eight".