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28058958 = 2321558831
BaseRepresentation
bin110101100001…
…0010101001110
31221210112122200
41223002111032
524140341313
62441222330
7460332354
oct153022516
957715580
1028058958
1114925124
1294919a6
135a75645
143a257d4
1526e3b73
hex1ac254e

28058958 has 12 divisors (see below), whose sum is σ = 60794448. Its totient is φ = 9352980.

The previous prime is 28058939. The next prime is 28058977. The reversal of 28058958 is 85985082.

It is an interprime number because it is at equal distance from previous prime (28058939) and next prime (28058977).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 779398 + ... + 779433.

It is an arithmetic number, because the mean of its divisors is an integer number (5066204).

Almost surely, 228058958 is an apocalyptic number.

28058958 is an abundant number, since it is smaller than the sum of its proper divisors (32735490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28058958 is a wasteful number, since it uses less digits than its factorization.

28058958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558839 (or 1558836 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 28058958 is about 5297.0706999246. The cubic root of 28058958 is about 303.8718801647.

The spelling of 28058958 in words is "twenty-eight million, fifty-eight thousand, nine hundred fifty-eight".

Divisors: 1 2 3 6 9 18 1558831 3117662 4676493 9352986 14029479 28058958