38547990 has 96 divisors (see below), whose sum is σ = 110388096. Its totient is φ = 9273600.

The previous prime is 38547983. The next prime is 38548001. The reversal of 38547990 is 9974583.

It is a super-3 number, since 3×38547990³ (a number of 24 digits) contains 333 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54640 + ... + 55340.

It is an arithmetic number, because the mean of its divisors is an integer number (1149876).

Almost surely, 2^38547990 is an apocalyptic number.

38547990 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 38547990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55194048).

38547990 is an abundant number, since it is smaller than the sum of its proper divisors (71840106).

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

38547990 is a wasteful number, since it uses less digits than its factorization.

38547990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 38547990 is about 6208.7027630577. The cubic root of 38547990 is about 337.8059119363.

The spelling of 38547990 in words is "thirty-eight million, five hundred forty-seven thousand, nine hundred ninety".