153197440 has 128 divisors (see below), whose sum is σ = 408913920. Its totient is φ = 54405120.

The previous prime is 153197371. The next prime is 153197461. The reversal of 153197440 is 44791351.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 153197396 and 153197405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330649 + ... + 331111.

It is an arithmetic number, because the mean of its divisors is an integer number (3194640).

Almost surely, 2^153197440 is an apocalyptic number.

153197440 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 153197440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204456960).

153197440 is an abundant number, since it is smaller than the sum of its proper divisors (255716480).

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

153197440 is a wasteful number, since it uses less digits than its factorization.

153197440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 153197440 is about 12377.2953426829. The cubic root of 153197440 is about 535.0780914919.

The spelling of 153197440 in words is "one hundred fifty-three million, one hundred ninety-seven thousand, four hundred forty".