45128390 has 8 divisors (see below), whose sum is σ = 81231120. Its totient is φ = 18051352.

The previous prime is 45128389. The next prime is 45128393. The reversal of 45128390 is 9382154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45128393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2256410 + ... + 2256429.

It is an arithmetic number, because the mean of its divisors is an integer number (10153890).

Almost surely, 2^45128390 is an apocalyptic number.

45128390 is a deficient number, since it is larger than the sum of its proper divisors (36102730).

45128390 is a wasteful number, since it uses less digits than its factorization.

45128390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512846.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 45128390 is about 6717.7667420059. The cubic root of 45128390 is about 356.0272829741.

The spelling of 45128390 in words is "forty-five million, one hundred twenty-eight thousand, three hundred ninety".