Search a number
-
+
38058157 = 195119507
BaseRepresentation
bin1001000100101…
…1100010101101
32122121112222101
42101023202231
534220330112
63435415101
7641326504
oct221134255
978545871
1038058157
111a534725
12108b4491
137b66a27
1450a983b
15351b757
hex244b8ad

38058157 has 4 divisors (see below), whose sum is σ = 38079616. Its totient is φ = 38036700.

The previous prime is 38058151. The next prime is 38058161. The reversal of 38058157 is 75185083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75185083 = 128358601.

It is a cyclic number.

It is not a de Polignac number, because 38058157 - 27 = 38058029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38058151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7803 + ... + 11704.

It is an arithmetic number, because the mean of its divisors is an integer number (9519904).

Almost surely, 238058157 is an apocalyptic number.

38058157 is the 3902-nd heptagonal number.

It is an amenable number.

38058157 is a deficient number, since it is larger than the sum of its proper divisors (21459).

38058157 is a wasteful number, since it uses less digits than its factorization.

38058157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21458.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 38058157 is about 6169.1293551035. The cubic root of 38058157 is about 336.3689641386.

The spelling of 38058157 in words is "thirty-eight million, fifty-eight thousand, one hundred fifty-seven".

Divisors: 1 1951 19507 38058157