157173040 has 80 divisors (see below), whose sum is σ = 388457280. Its totient is φ = 59028480.

The previous prime is 157173019. The next prime is 157173047. The reversal of 157173040 is 40371751.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (157173047) 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, 84925 + ... + 86755.

It is an arithmetic number, because the mean of its divisors is an integer number (4855716).

Almost surely, 2^157173040 is an apocalyptic number.

157173040 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 157173040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194228640).

157173040 is an abundant number, since it is smaller than the sum of its proper divisors (231284240).

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

157173040 is a wasteful number, since it uses less digits than its factorization.

157173040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1904 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 157173040 is about 12536.8672322873. The cubic root of 157173040 is about 539.6671931928.

The spelling of 157173040 in words is "one hundred fifty-seven million, one hundred seventy-three thousand, forty".