Search a number
BaseRepresentation
bin1001011010001…
…00111010010000
312111111211101001
410231010322100
5130201103311
611455351344
71645566241
oct455047220
9174454331
1078925456
1140607955
1222522554
131347526c
14a6a6cc8
156de04c1
hex4b44e90

78925456 has 15 divisors (see below), whose sum is σ = 152986953. Its totient is φ = 39444960.

The previous prime is 78925453. The next prime is 78925463. The reversal of 78925456 is 65452987.

The square root of 78925456 is 8884.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 53523856 + 25401600 = 7316^2 + 5040^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78925453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 34426 + ... + 36646.

Almost surely, 278925456 is an apocalyptic number.

78925456 is the 8884-th square number.

It is an amenable number.

78925456 is a deficient number, since it is larger than the sum of its proper divisors (74061497).

78925456 is an frugal number, since it uses more digits than its factorization.

78925456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450 (or 2223 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The cubic root of 78925456 is about 428.9490397210.

The spelling of 78925456 in words is "seventy-eight million, nine hundred twenty-five thousand, four hundred fifty-six".