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28025950 = 2521929501
BaseRepresentation
bin110101011101…
…0010001011110
31221201212101011
41222322101132
524133312300
62440405434
7460134211
oct152722136
957655334
1028025950
1114902347
12947687a
135a63604
143a17778
1526d8eba
hex1aba45e

28025950 has 24 divisors (see below), whose sum is σ = 54873720. Its totient is φ = 10620000.

The previous prime is 28025947. The next prime is 28025951. The reversal of 28025950 is 5952082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13801 + ... + 15700.

It is an arithmetic number, because the mean of its divisors is an integer number (2286405).

Almost surely, 228025950 is an apocalyptic number.

28025950 is a deficient number, since it is larger than the sum of its proper divisors (26847770).

28025950 is a wasteful number, since it uses less digits than its factorization.

28025950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29532 (or 29527 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 28025950 is about 5293.9540987810. The cubic root of 28025950 is about 303.7526771315.

The spelling of 28025950 in words is "twenty-eight million, twenty-five thousand, nine hundred fifty".

Divisors: 1 2 5 10 19 25 38 50 95 190 475 950 29501 59002 147505 295010 560519 737525 1121038 1475050 2802595 5605190 14012975 28025950