45739278 has 48 divisors (see below), whose sum is σ = 108566640. Its totient is φ = 13830912.

The previous prime is 45739273. The next prime is 45739279. The reversal of 45739278 is 87293754.

45739278 is a `hidden beast` number, since 4 + 573 + 9 + 2 + 78 = 666.

It is a super-2 number, since 2×45739278² = 4184163103922568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45739273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12150 + ... + 15462.

It is an arithmetic number, because the mean of its divisors is an integer number (2261805).

Almost surely, 2^45739278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45739278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54283320).

45739278 is an abundant number, since it is smaller than the sum of its proper divisors (62827362).

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

45739278 is a wasteful number, since it uses less digits than its factorization.

45739278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393 (or 3390 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 45739278 is about 6763.0819897440. The cubic root of 45739278 is about 357.6265625210.

The spelling of 45739278 in words is "forty-five million, seven hundred thirty-nine thousand, two hundred seventy-eight".