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28429692 = 22313717293
BaseRepresentation
bin110110001110…
…0110101111100
31222111101012120
41230130311330
524234222232
62453202540
7463435254
oct154346574
958441176
1028429692
1115058715
129630450
135b75305
143ac0964
15276892c
hex1b1cd7c

28429692 has 24 divisors (see below), whose sum is σ = 66824016. Its totient is φ = 9406848.

The previous prime is 28429691. The next prime is 28429693. The reversal of 28429692 is 29692482.

It is an interprime number because it is at equal distance from previous prime (28429691) and next prime (28429693).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28429691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7003 + ... + 10290.

It is an arithmetic number, because the mean of its divisors is an integer number (2784334).

Almost surely, 228429692 is an apocalyptic number.

It is an amenable number.

28429692 is an abundant number, since it is smaller than the sum of its proper divisors (38394324).

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

28429692 is a wasteful number, since it uses less digits than its factorization.

28429692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17437 (or 17435 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 28429692 is about 5331.9501122948. The cubic root of 28429692 is about 305.2043493051.

The spelling of 28429692 in words is "twenty-eight million, four hundred twenty-nine thousand, six hundred ninety-two".

Divisors: 1 2 3 4 6 12 137 274 411 548 822 1644 17293 34586 51879 69172 103758 207516 2369141 4738282 7107423 9476564 14214846 28429692