45342738 has 72 divisors (see below), whose sum is σ = 115640460. Its totient is φ = 12801600.

The previous prime is 45342727. The next prime is 45342749. The reversal of 45342738 is 83724354.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45342727) and next prime (45342749).

It can be written as a sum of positive squares in 2 ways, for example, as 36324729 + 9018009 = 6027^2 + 3003^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 88828 + ... + 89336.

Almost surely, 2^45342738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45342738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57820230).

45342738 is an abundant number, since it is smaller than the sum of its proper divisors (70297722).

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

45342738 is a wasteful number, since it uses less digits than its factorization.

45342738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 622 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 45342738 is about 6733.7016565928. The cubic root of 45342738 is about 356.5900715754.

The spelling of 45342738 in words is "forty-five million, three hundred forty-two thousand, seven hundred thirty-eight".