38561340 has 48 divisors (see below), whose sum is σ = 112670208. Its totient is φ = 9835584.

The previous prime is 38561273. The next prime is 38561351. The reversal of 38561340 is 4316583.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 38561298 and 38561307.

It is a congruent 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, 12592 + ... + 15351.

It is an arithmetic number, because the mean of its divisors is an integer number (2347296).

Almost surely, 2^38561340 is an apocalyptic number.

38561340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38561340 is an abundant number, since it is smaller than the sum of its proper divisors (74108868).

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

38561340 is a wasteful number, since it uses less digits than its factorization.

38561340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27978 (or 27976 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 38561340 is about 6209.7777738016. Note that the first 5 decimals coincide. The cubic root of 38561340 is about 337.8449039254.

The spelling of 38561340 in words is "thirty-eight million, five hundred sixty-one thousand, three hundred forty".