157273380 has 288 divisors, whose sum is σ = 563068800. Its totient is φ = 36368640.

The previous prime is 157273367. The next prime is 157273381. The reversal of 157273380 is 83372751.

157273380 is a `hidden beast` number, since 1 + 5 + 7 + 273 + 380 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (157273381) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1894819 + ... + 1894901.

It is an arithmetic number, because the mean of its divisors is an integer number (1955100).

Almost surely, 2^157273380 is an apocalyptic number.

157273380 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 157273380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281534400).

157273380 is an abundant number, since it is smaller than the sum of its proper divisors (405795420).

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

157273380 is a wasteful number, since it uses less digits than its factorization.

157273380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 157273380 is about 12540.8683909847. The cubic root of 157273380 is about 539.7820107786.

The spelling of 157273380 in words is "one hundred fifty-seven million, two hundred seventy-three thousand, three hundred eighty".