154057640 has 64 divisors (see below), whose sum is σ = 388402560. Its totient is φ = 54501120.

The previous prime is 154057639. The next prime is 154057649. The reversal of 154057640 is 46750451.

It is a junction number, because it is equal to n+sod(n) for n = 154057597 and 154057606.

It is not an unprimeable number, because it can be changed into a prime (154057649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11549 + ... + 21011.

It is an arithmetic number, because the mean of its divisors is an integer number (6068790).

Almost surely, 2^154057640 is an apocalyptic number.

154057640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154057640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194201280).

154057640 is an abundant number, since it is smaller than the sum of its proper divisors (234344920).

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

154057640 is a wasteful number, since it uses less digits than its factorization.

154057640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9522 (or 9518 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 154057640 is about 12411.9958105053. The cubic root of 154057640 is about 536.0777064885.

The spelling of 154057640 in words is "one hundred fifty-four million, fifty-seven thousand, six hundred forty".