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3728989 = 11338999
BaseRepresentation
bin1110001110011001011101
321000110012201
432032121131
51423311424
6211531501
743460455
oct16163135
97013181
103728989
112117710
1212b9b91
13a07404
146d0d65
154d9d44
hex38e65d

3728989 has 4 divisors (see below), whose sum is σ = 4068000. Its totient is φ = 3389980.

The previous prime is 3728987. The next prime is 3729007. The reversal of 3728989 is 9898273.

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 not a de Polignac number, because 3728989 - 21 = 3728987 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 (3728983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169489 + ... + 169510.

It is an arithmetic number, because the mean of its divisors is an integer number (1017000).

Almost surely, 23728989 is an apocalyptic number.

It is an amenable number.

3728989 is a deficient number, since it is larger than the sum of its proper divisors (339011).

3728989 is a wasteful number, since it uses less digits than its factorization.

3728989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339010.

The product of its digits is 217728, while the sum is 46.

The square root of 3728989 is about 1931.0590358661. The cubic root of 3728989 is about 155.0709214119.

The spelling of 3728989 in words is "three million, seven hundred twenty-eight thousand, nine hundred eighty-nine".

Divisors: 1 11 338999 3728989