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1157248 = 279041
BaseRepresentation
bin100011010100010000000
32011210110001
410122202000
5244012443
640445344
712556621
oct4324200
92153401
101157248
11720504
12479854
13316981
14221a48
1517cd4d
hex11a880

1157248 has 16 divisors (see below), whose sum is σ = 2305710. Its totient is φ = 578560.

The previous prime is 1157243. The next prime is 1157251. The reversal of 1157248 is 8427511.

It can be written as a sum of positive squares in only one way, i.e., 627264 + 529984 = 792^2 + 728^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1157243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4393 + ... + 4648.

21157248 is an apocalyptic number.

It is an amenable number.

1157248 is a deficient number, since it is larger than the sum of its proper divisors (1148462).

1157248 is an frugal number, since it uses more digits than its factorization.

1157248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055 (or 9043 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 1157248 is about 1075.7546188606. The cubic root of 1157248 is about 104.9886004253.

The spelling of 1157248 in words is "one million, one hundred fifty-seven thousand, two hundred forty-eight".

Divisors: 1 2 4 8 16 32 64 128 9041 18082 36164 72328 144656 289312 578624 1157248