157985244 has 36 divisors (see below), whose sum is σ = 406125720. Its totient is φ = 51768480.

The previous prime is 157985237. The next prime is 157985251. The reversal of 157985244 is 442589751.

It is an interprime number because it is at equal distance from previous prime (157985237) and next prime (157985251).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 157985244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35067 + ... + 39314.

It is an arithmetic number, because the mean of its divisors is an integer number (11281270).

Almost surely, 2^157985244 is an apocalyptic number.

It is an amenable number.

157985244 is an abundant number, since it is smaller than the sum of its proper divisors (248140476).

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

157985244 is a wasteful number, since it uses less digits than its factorization.

157985244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74450 (or 74445 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 157985244 is about 12569.2181141072. The cubic root of 157985244 is about 540.5951873656.

The spelling of 157985244 in words is "one hundred fifty-seven million, nine hundred eighty-five thousand, two hundred forty-four".