45129890 has 32 divisors (see below), whose sum is σ = 87816960. Its totient is φ = 16599744.

The previous prime is 45129881. The next prime is 45129907. The reversal of 45129890 is 9892154.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46187 + ... + 47153.

It is an arithmetic number, because the mean of its divisors is an integer number (2744280).

Almost surely, 2^45129890 is an apocalyptic number.

45129890 is a deficient number, since it is larger than the sum of its proper divisors (42687070).

45129890 is a wasteful number, since it uses less digits than its factorization.

45129890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 45129890 is about 6717.8783853237. The cubic root of 45129890 is about 356.0312275347.

The spelling of 45129890 in words is "forty-five million, one hundred twenty-nine thousand, eight hundred ninety".