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38981541 = 312993847
BaseRepresentation
bin1001010010110…
…0111110100101
32201100110121210
42110230332211
534434402131
63511302033
7652223544
oct224547645
981313553
1038981541
1120005455
121107a919
1380cb101
14526a15b
153650146
hex252cfa5

38981541 has 4 divisors (see below), whose sum is σ = 51975392. Its totient is φ = 25987692.

The previous prime is 38981519. The next prime is 38981563. The reversal of 38981541 is 14518983.

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.

It is an interprime number because it is at equal distance from previous prime (38981519) and next prime (38981563).

It is not a de Polignac number, because 38981541 - 27 = 38981413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38981541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38981441) 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, 6496921 + ... + 6496926.

It is an arithmetic number, because the mean of its divisors is an integer number (12993848).

Almost surely, 238981541 is an apocalyptic number.

It is an amenable number.

38981541 is a deficient number, since it is larger than the sum of its proper divisors (12993851).

38981541 is a wasteful number, since it uses less digits than its factorization.

38981541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12993850.

The product of its digits is 34560, while the sum is 39.

The square root of 38981541 is about 6243.5199206858. The cubic root of 38981541 is about 339.0676329760.

The spelling of 38981541 in words is "thirty-eight million, nine hundred eighty-one thousand, five hundred forty-one".

Divisors: 1 3 12993847 38981541