Search a number
-
+
1357988 = 222571321
BaseRepresentation
bin101001011100010100100
32112222210212
411023202210
5321423423
645034552
714354102
oct5134244
92488725
101357988
11848305
12555a58
13387158
14274c72
151bc578
hex14b8a4

1357988 has 12 divisors (see below), whose sum is σ = 2387532. Its totient is φ = 675840.

The previous prime is 1357969. The next prime is 1358009. The reversal of 1357988 is 8897531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1304164 + 53824 = 1142^2 + 232^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (198961).

21357988 is an apocalyptic number.

It is an amenable number.

1357988 is a deficient number, since it is larger than the sum of its proper divisors (1029544).

1357988 is a wasteful number, since it uses less digits than its factorization.

1357988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582 (or 1580 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 1357988 is about 1165.3274218004. The cubic root of 1357988 is about 110.7385019324.

The spelling of 1357988 in words is "one million, three hundred fifty-seven thousand, nine hundred eighty-eight".

Divisors: 1 2 4 257 514 1028 1321 2642 5284 339497 678994 1357988