38578765 has 8 divisors (see below), whose sum is σ = 46704888. Its totient is φ = 30589440.

The previous prime is 38578733. The next prime is 38578807. The reversal of 38578765 is 56787583.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 37319881 = 1122^2 + 6109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38578765 - 2⁵ = 38578733 is a prime.

It is a super-2 number, since 2×38578765² = 2976642217850450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33576 + ... + 34705.

It is an arithmetic number, because the mean of its divisors is an integer number (5838111).

Almost surely, 2^38578765 is an apocalyptic number.

It is an amenable number.

38578765 is a deficient number, since it is larger than the sum of its proper divisors (8126123).

38578765 is a wasteful number, since it uses less digits than its factorization.

38578765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68399.

The product of its digits is 1411200, while the sum is 49.

The square root of 38578765 is about 6211.1806446118. The cubic root of 38578765 is about 337.8957844269.

The spelling of 38578765 in words is "thirty-eight million, five hundred seventy-eight thousand, seven hundred sixty-five".