38854890 has 40 divisors (see below), whose sum is σ = 104478660. Its totient is φ = 10361088.

The previous prime is 38854861. The next prime is 38854919. The reversal of 38854890 is 9845883.

It is an interprime number because it is at equal distance from previous prime (38854861) and next prime (38854919).

It can be written as a sum of positive squares in 2 ways, for example, as 38675961 + 178929 = 6219^2 + 423^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

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 19 ways as a sum of consecutive naturals, for example, 23175 + ... + 24794.

Almost surely, 2^38854890 is an apocalyptic number.

38854890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38854890 is an abundant number, since it is smaller than the sum of its proper divisors (65623770).

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

38854890 is a wasteful number, since it uses less digits than its factorization.

38854890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47988 (or 47979 counting only the distinct ones).

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

The square root of 38854890 is about 6233.3690729813. The cubic root of 38854890 is about 338.7000243990.

It can be divided in two parts, 388 and 54890, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 38854890 in words is "thirty-eight million, eight hundred fifty-four thousand, eight hundred ninety".