157448240 has 20 divisors (see below), whose sum is σ = 366067344. Its totient is φ = 62979264.

The previous prime is 157448233. The next prime is 157448257. The reversal of 157448240 is 42844751.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 157448240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983972 + ... + 984131.

Almost surely, 2^157448240 is an apocalyptic number.

157448240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157448240 is an abundant number, since it is smaller than the sum of its proper divisors (208619104).

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

157448240 is a wasteful number, since it uses less digits than its factorization.

157448240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968116 (or 1968110 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 157448240 is about 12547.8380607976. The cubic root of 157448240 is about 539.9819838525.

The spelling of 157448240 in words is "one hundred fifty-seven million, four hundred forty-eight thousand, two hundred forty".