148635640 has 32 divisors (see below), whose sum is σ = 337750560. Its totient is φ = 58864000.

The previous prime is 148635631. The next prime is 148635659. The reversal of 148635640 is 46536841.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 148635640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14356 + ... + 22435.

It is an arithmetic number, because the mean of its divisors is an integer number (10554705).

Almost surely, 2^148635640 is an apocalyptic number.

148635640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148635640 is an abundant number, since it is smaller than the sum of its proper divisors (189114920).

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

148635640 is a wasteful number, since it uses less digits than its factorization.

148635640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36903 (or 36899 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 148635640 is about 12191.6217132915. The cubic root of 148635640 is about 529.7134323616.

It can be divided in two parts, 14863 and 5640, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 148635640 in words is "one hundred forty-eight million, six hundred thirty-five thousand, six hundred forty".