153138940 has 12 divisors (see below), whose sum is σ = 321591816. Its totient is φ = 61255568.

The previous prime is 153138913. The next prime is 153138943. The reversal of 153138940 is 49831351.

153138940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 153138896 and 153138905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153138943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3828454 + ... + 3828493.

It is an arithmetic number, because the mean of its divisors is an integer number (26799318).

Almost surely, 2^153138940 is an apocalyptic number.

153138940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153138940 is an abundant number, since it is smaller than the sum of its proper divisors (168452876).

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

153138940 is a wasteful number, since it uses less digits than its factorization.

153138940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656956 (or 7656954 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 153138940 is about 12374.9319190046. The cubic root of 153138940 is about 535.0099744843.

The spelling of 153138940 in words is "one hundred fifty-three million, one hundred thirty-eight thousand, nine hundred forty".