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1406244 = 223716741
BaseRepresentation
bin101010111010100100100
32122110000010
411113110210
5324444434
650050220
714644560
oct5272444
92573003
101406244
11880594
12579970
133a30c8
142886a0
151cb9e9
hex157524

1406244 has 24 divisors (see below), whose sum is σ = 3750208. Its totient is φ = 401760.

The previous prime is 1406231. The next prime is 1406267. The reversal of 1406244 is 4426041.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1406244.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8287 + ... + 8454.

21406244 is an apocalyptic number.

1406244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1406244 is an abundant number, since it is smaller than the sum of its proper divisors (2343964).

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

1406244 is a wasteful number, since it uses less digits than its factorization.

1406244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755 (or 16753 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1406244 is about 1185.8515927383. The cubic root of 1406244 is about 112.0349593249.

The spelling of 1406244 in words is "one million, four hundred six thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 16741 33482 50223 66964 100446 117187 200892 234374 351561 468748 703122 1406244