45278144 has 28 divisors (see below), whose sum is σ = 90108024. Its totient is φ = 22573824.

The previous prime is 45278117. The next prime is 45278147. The reversal of 45278144 is 44187254.

It is a super-2 number, since 2×45278144² = 4100220648169472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45278147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27554 + ... + 29150.

Almost surely, 2^45278144 is an apocalyptic number.

It is an amenable number.

45278144 is a deficient number, since it is larger than the sum of its proper divisors (44829880).

45278144 is a wasteful number, since it uses less digits than its factorization.

45278144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 2042 counting only the distinct ones).

The product of its digits is 35840, while the sum is 35.

The square root of 45278144 is about 6728.9036254059. The cubic root of 45278144 is about 356.4206616807.

The spelling of 45278144 in words is "forty-five million, two hundred seventy-eight thousand, one hundred forty-four".