38458890 has 48 divisors (see below), whose sum is σ = 100372896. Its totient is φ = 10216800.

The previous prime is 38458789. The next prime is 38458891. The reversal of 38458890 is 9885483.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (38458891) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 29145 + ... + 30435.

It is an arithmetic number, because the mean of its divisors is an integer number (2091102).

Almost surely, 2^38458890 is an apocalyptic number.

38458890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38458890 is an abundant number, since it is smaller than the sum of its proper divisors (61914006).

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

38458890 is a wasteful number, since it uses less digits than its factorization.

38458890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 38458890 is about 6201.5231999889. The cubic root of 38458890 is about 337.5454424408.

The spelling of 38458890 in words is "thirty-eight million, four hundred fifty-eight thousand, eight hundred ninety".