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1216148 = 222313219
BaseRepresentation
bin100101000111010010100
32021210020112
410220322110
5302404043
642022152
713223423
oct4507224
92253215
101216148
1176078a
124a7958
1333771b
142392ba
15190518
hex128e94

1216148 has 12 divisors (see below), whose sum is σ = 2220960. Its totient is φ = 581592.

The previous prime is 1216147. The next prime is 1216151. The reversal of 1216148 is 8416121.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216147) 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, 6518 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (185080).

21216148 is an apocalyptic number.

It is an amenable number.

1216148 is a deficient number, since it is larger than the sum of its proper divisors (1004812).

1216148 is a wasteful number, since it uses less digits than its factorization.

1216148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13246 (or 13244 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 1216148 is about 1102.7910046786. The cubic root of 1216148 is about 106.7403960741.

The spelling of 1216148 in words is "one million, two hundred sixteen thousand, one hundred forty-eight".

Divisors: 1 2 4 23 46 92 13219 26438 52876 304037 608074 1216148