45622278 has 112 divisors (see below), whose sum is σ = 115683120. Its totient is φ = 13390272.

The previous prime is 45622273. The next prime is 45622279. The reversal of 45622278 is 87222654.

45622278 is a `hidden beast` number, since 4 + 5 + 622 + 27 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45622273) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 549625 + ... + 549707.

It is an arithmetic number, because the mean of its divisors is an integer number (1032885).

Almost surely, 2^45622278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45622278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57841560).

45622278 is an abundant number, since it is smaller than the sum of its proper divisors (70060842).

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

45622278 is a wasteful number, since it uses less digits than its factorization.

45622278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 130 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 45622278 is about 6754.4265485680. The cubic root of 45622278 is about 357.3213686945.

The spelling of 45622278 in words is "forty-five million, six hundred twenty-two thousand, two hundred seventy-eight".