78227370 has 320 divisors, whose sum is σ = 263450880. Its totient is φ = 16422912.

The previous prime is 78227341. The next prime is 78227371. The reversal of 78227370 is 7372287.

It is a super-2 number, since 2×78227370² = 12239042834233800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78227371) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 3401179 + ... + 3401201.

It is an arithmetic number, because the mean of its divisors is an integer number (823284).

Almost surely, 2^78227370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78227370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131725440).

78227370 is an abundant number, since it is smaller than the sum of its proper divisors (185223510).

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

78227370 is a wasteful number, since it uses less digits than its factorization.

78227370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 78227370 is about 8844.6237907556. The cubic root of 78227370 is about 427.6806254266.

The spelling of 78227370 in words is "seventy-eight million, two hundred twenty-seven thousand, three hundred seventy".