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2872470 = 235232181
BaseRepresentation
bin1010111101010010010110
312101221021210
422331102112
51213404340
6141322250
733262356
oct12752226
95357253
102872470
111692147
12b66386
137975b3
1454ab66
153bb180
hex2bd496

2872470 has 48 divisors (see below), whose sum is σ = 7246512. Its totient is φ = 728640.

The previous prime is 2872459. The next prime is 2872481. The reversal of 2872470 is 742782.

It is an interprime number because it is at equal distance from previous prime (2872459) and next prime (2872481).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15780 + ... + 15960.

It is an arithmetic number, because the mean of its divisors is an integer number (150969).

22872470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2872470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3623256).

2872470 is an abundant number, since it is smaller than the sum of its proper divisors (4374042).

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

2872470 is a wasteful number, since it uses less digits than its factorization.

2872470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2872470 is about 1694.8362752785. The cubic root of 2872470 is about 142.1516267026.

The spelling of 2872470 in words is "two million, eight hundred seventy-two thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 181 230 345 362 529 543 690 905 1058 1086 1587 1810 2645 2715 3174 4163 5290 5430 7935 8326 12489 15870 20815 24978 41630 62445 95749 124890 191498 287247 478745 574494 957490 1436235 2872470