148309640 has 16 divisors (see below), whose sum is σ = 333696780. Its totient is φ = 59323840.

The previous prime is 148309631. The next prime is 148309643. The reversal of 148309640 is 46903841.

It can be written as a sum of positive squares in 2 ways, for example, as 135536164 + 12773476 = 11642^2 + 3574^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 148309640.

It is not an unprimeable number, because it can be changed into a prime (148309643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1853831 + ... + 1853910.

Almost surely, 2^148309640 is an apocalyptic number.

148309640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148309640 is an abundant number, since it is smaller than the sum of its proper divisors (185387140).

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

148309640 is a wasteful number, since it uses less digits than its factorization.

148309640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707752 (or 3707748 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 148309640 is about 12178.2445368780. The cubic root of 148309640 is about 529.3258784228.

The spelling of 148309640 in words is "one hundred forty-eight million, three hundred nine thousand, six hundred forty".