78378948 has 24 divisors (see below), whose sum is σ = 203204960. Its totient is φ = 26126280.

The previous prime is 78378941. The next prime is 78378991. The reversal of 78378948 is 84987387.

It is a super-2 number, since 2×78378948² = 12286518979173408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 78378894 and 78378903.

It is not an unprimeable number, because it can be changed into a prime (78378941) 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, 362758 + ... + 362973.

Almost surely, 2^78378948 is an apocalyptic number.

It is an amenable number.

78378948 is an abundant number, since it is smaller than the sum of its proper divisors (124826012).

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

78378948 is a wasteful number, since it uses less digits than its factorization.

78378948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725744 (or 725736 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 78378948 is about 8853.1885781339. The cubic root of 78378948 is about 427.9566803333.

The spelling of 78378948 in words is "seventy-eight million, three hundred seventy-eight thousand, nine hundred forty-eight".