Search a number
-
+
28387300542 = 234731216757
BaseRepresentation
bin11010011100000000…
…111101010010111110
32201021100201021121120
4122130000331102332
5431114122104132
621012502211410
72023315034106
oct323400752276
981240637546
1028387300542
1111047989067
125602a23b66
1328a5233b73
1415341aa206
15b1226c02c
hex69c03d4be

28387300542 has 8 divisors (see below), whose sum is σ = 56774601096. Its totient is φ = 9462433512.

The previous prime is 28387300541. The next prime is 28387300567. The reversal of 28387300542 is 24500378382.

It is a sphenic number, since it is the product of 3 distinct primes.

28387300542 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28387300494 and 28387300503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28387300541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2365608373 + ... + 2365608384.

It is an arithmetic number, because the mean of its divisors is an integer number (7096825137).

Almost surely, 228387300542 is an apocalyptic number.

28387300542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28387300542 is a wasteful number, since it uses less digits than its factorization.

28387300542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731216762.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 28387300542 in words is "twenty-eight billion, three hundred eighty-seven million, three hundred thousand, five hundred forty-two".

Divisors: 1 2 3 6 4731216757 9462433514 14193650271 28387300542