38988810 has 128 divisors (see below), whose sum is σ = 121536000. Its totient is φ = 8890560.

The previous prime is 38988809. The next prime is 38988811. The reversal of 38988810 is 1888983.

It is an interprime number because it is at equal distance from previous prime (38988809) and next prime (38988811).

It is a super-2 number, since 2×38988810² = 3040254610432200, which contains 22 as substring.

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 (38988811) 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 63 ways as a sum of consecutive naturals, for example, 92400 + ... + 92820.

It is an arithmetic number, because the mean of its divisors is an integer number (949500).

Almost surely, 2^38988810 is an apocalyptic number.

38988810 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38988810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60768000).

38988810 is an abundant number, since it is smaller than the sum of its proper divisors (82547190).

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

38988810 is a wasteful number, since it uses less digits than its factorization.

38988810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 38988810 is about 6244.1020171038. The cubic root of 38988810 is about 339.0887073049.

The spelling of 38988810 in words is "thirty-eight million, nine hundred eighty-eight thousand, eight hundred ten".