Search a number
-
+
1257072 = 24326189
BaseRepresentation
bin100110010111001110000
32100212101020
410302321300
5310211242
642535440
713453635
oct4627160
92325336
101257072
11789503
12507580
1335023b
1424a18c
1519c6ec
hex132e70

1257072 has 20 divisors (see below), whose sum is σ = 3247560. Its totient is φ = 419008.

The previous prime is 1257071. The next prime is 1257073. The reversal of 1257072 is 2707521.

It is an interprime number because it is at equal distance from previous prime (1257071) and next prime (1257073).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257071) 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, 13047 + ... + 13142.

It is an arithmetic number, because the mean of its divisors is an integer number (162378).

21257072 is an apocalyptic number.

1257072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1257072 is an abundant number, since it is smaller than the sum of its proper divisors (1990488).

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

1257072 is a wasteful number, since it uses less digits than its factorization.

1257072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26200 (or 26194 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 1257072 is about 1121.1922225916. The cubic root of 1257072 is about 107.9245014180.

The spelling of 1257072 in words is "one million, two hundred fifty-seven thousand, seventy-two".

Divisors: 1 2 3 4 6 8 12 16 24 48 26189 52378 78567 104756 157134 209512 314268 419024 628536 1257072