78277948 has 24 divisors (see below), whose sum is σ = 164796800. Its totient is φ = 31781808.

The previous prime is 78277943. The next prime is 78277949. The reversal of 78277948 is 84977287.

It is a happy number.

It is a super-2 number, since 2×78277948² = 12254874286181408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78277895 and 78277904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78277943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73038 + ... + 74101.

Almost surely, 2^78277948 is an apocalyptic number.

It is an amenable number.

78277948 is an abundant number, since it is smaller than the sum of its proper divisors (86518852).

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

78277948 is a wasteful number, since it uses less digits than its factorization.

78277948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147169 (or 147167 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 52.

The square root of 78277948 is about 8847.4825798077. The cubic root of 78277948 is about 427.7727780429.

The spelling of 78277948 in words is "seventy-eight million, two hundred seventy-seven thousand, nine hundred forty-eight".