78344622 has 48 divisors (see below), whose sum is σ = 173968080. Its totient is φ = 25474176.

The previous prime is 78344621. The next prime is 78344639. The reversal of 78344622 is 22644387.

It is a super-2 number, since 2×78344622² = 12275759592645768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78344621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142953 + ... + 143499.

It is an arithmetic number, because the mean of its divisors is an integer number (3624335).

Almost surely, 2^78344622 is an apocalyptic number.

78344622 is an abundant number, since it is smaller than the sum of its proper divisors (95623458).

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

78344622 is a wasteful number, since it uses less digits than its factorization.

78344622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 734 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 78344622 is about 8851.2497422680. The cubic root of 78344622 is about 427.8941967779.

The spelling of 78344622 in words is "seventy-eight million, three hundred forty-four thousand, six hundred twenty-two".