148178640 has 40 divisors (see below), whose sum is σ = 459354528. Its totient is φ = 39514240.

The previous prime is 148178617. The next prime is 148178669. The reversal of 148178640 is 46871841.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 308466 + ... + 308945.

Almost surely, 2^148178640 is an apocalyptic number.

148178640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148178640 is an abundant number, since it is smaller than the sum of its proper divisors (311175888).

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

148178640 is a wasteful number, since it uses less digits than its factorization.

148178640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617427 (or 617421 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 148178640 is about 12172.8649051897. The cubic root of 148178640 is about 529.1699835974.

The spelling of 148178640 in words is "one hundred forty-eight million, one hundred seventy-eight thousand, six hundred forty".