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28419542 = 214209771
BaseRepresentation
bin110110001101…
…0010111010110
31222110212021122
41230122113112
524233411132
62453043542
7463363544
oct154322726
958425248
1028419542
1115051028
1296265b2
135b707c8
143abad94
152765912
hex1b1a5d6

28419542 has 4 divisors (see below), whose sum is σ = 42629316. Its totient is φ = 14209770.

The previous prime is 28419527. The next prime is 28419551. The reversal of 28419542 is 24591482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24591482 = 212295741.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7104884 + ... + 7104887.

It is an arithmetic number, because the mean of its divisors is an integer number (10657329).

Almost surely, 228419542 is an apocalyptic number.

28419542 is a deficient number, since it is larger than the sum of its proper divisors (14209774).

28419542 is a wasteful number, since it uses less digits than its factorization.

28419542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14209773.

The product of its digits is 23040, while the sum is 35.

The square root of 28419542 is about 5330.9982179701. The cubic root of 28419542 is about 305.1680235172.

The spelling of 28419542 in words is "twenty-eight million, four hundred nineteen thousand, five hundred forty-two".

Divisors: 1 2 14209771 28419542