78722070 has 64 divisors (see below), whose sum is σ = 228635136. Its totient is φ = 16934400.

The previous prime is 78722069. The next prime is 78722071. The reversal of 78722070 is 7022787.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78722069) and next prime (78722071).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78722071) 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 31 ways as a sum of consecutive naturals, for example, 7456 + ... + 14595.

It is an arithmetic number, because the mean of its divisors is an integer number (3572424).

Almost surely, 2^78722070 is an apocalyptic number.

78722070 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78722070 is an abundant number, since it is smaller than the sum of its proper divisors (149913066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78722070 is a wasteful number, since it uses less digits than its factorization.

78722070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22085.

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 78722070 is about 8872.5458578697. The cubic root of 78722070 is about 428.5802644210.

The spelling of 78722070 in words is "seventy-eight million, seven hundred twenty-two thousand, seventy".