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2872457 = 71972083
BaseRepresentation
bin1010111101010010001001
312101221021022
422331102021
51213404312
6141322225
733262340
oct12752211
95357238
102872457
111692135
12b66375
137975a3
1454ab57
153bb172
hex2bd489

2872457 has 8 divisors (see below), whose sum is σ = 3301056. Its totient is φ = 2448432.

The previous prime is 2872453. The next prime is 2872459. The reversal of 2872457 is 7542782.

2872457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2872457 - 22 = 2872453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2872451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338 + ... + 2420.

It is an arithmetic number, because the mean of its divisors is an integer number (412632).

22872457 is an apocalyptic number.

It is an amenable number.

2872457 is a deficient number, since it is larger than the sum of its proper divisors (428599).

2872457 is a wasteful number, since it uses less digits than its factorization.

2872457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287.

The product of its digits is 31360, while the sum is 35.

The square root of 2872457 is about 1694.8324400955. The cubic root of 2872457 is about 142.1514122560.

It can be divided in two parts, 287 and 2457, that added together give a cube (2744 = 143).

The spelling of 2872457 in words is "two million, eight hundred seventy-two thousand, four hundred fifty-seven".

Divisors: 1 7 197 1379 2083 14581 410351 2872457