45438678 has 16 divisors (see below), whose sum is σ = 100974960. Its totient is φ = 15146208.

The previous prime is 45438677. The next prime is 45438691. The reversal of 45438678 is 87683454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45438677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420675 + ... + 420782.

It is an arithmetic number, because the mean of its divisors is an integer number (6310935).

Almost surely, 2^45438678 is an apocalyptic number.

45438678 is an abundant number, since it is smaller than the sum of its proper divisors (55536282).

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

45438678 is a wasteful number, since it uses less digits than its factorization.

45438678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841468 (or 841462 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 45438678 is about 6740.8217599934. The cubic root of 45438678 is about 356.8413955454.

The spelling of 45438678 in words is "forty-five million, four hundred thirty-eight thousand, six hundred seventy-eight".