78241330 has 8 divisors (see below), whose sum is σ = 140834412. Its totient is φ = 31296528.

The previous prime is 78241307. The next prime is 78241343. The reversal of 78241330 is 3314287.

It can be written as a sum of positive squares in 2 ways, for example, as 63824121 + 14417209 = 7989^2 + 3797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78241330² = 12243411440337800, which contains 22 as substring.

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, 3912057 + ... + 3912076.

Almost surely, 2^78241330 is an apocalyptic number.

78241330 is a deficient number, since it is larger than the sum of its proper divisors (62593082).

78241330 is a wasteful number, since it uses less digits than its factorization.

78241330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7824140.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 78241330 is about 8845.4129355277. The cubic root of 78241330 is about 427.7060643764.

The spelling of 78241330 in words is "seventy-eight million, two hundred forty-one thousand, three hundred thirty".