45278840 has 32 divisors (see below), whose sum is σ = 102666960. Its totient is φ = 17971200.

The previous prime is 45278809. The next prime is 45278873. The reversal of 45278840 is 4887254.

It is a junction number, because it is equal to n+sod(n) for n = 45278794 and 45278803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920 + ... + 9560.

Almost surely, 2^45278840 is an apocalyptic number.

45278840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45278840 is an abundant number, since it is smaller than the sum of its proper divisors (57388120).

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

45278840 is a wasteful number, since it uses less digits than its factorization.

45278840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8783 (or 8779 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 45278840 is about 6728.9553423990. The cubic root of 45278840 is about 356.4224879298.

The spelling of 45278840 in words is "forty-five million, two hundred seventy-eight thousand, eight hundred forty".