157801268 has 6 divisors (see below), whose sum is σ = 276152226. Its totient is φ = 78900632.

The previous prime is 157801247. The next prime is 157801283. The reversal of 157801268 is 862108751.

It can be written as a sum of positive squares in only one way, i.e., 155052304 + 2748964 = 12452^2 + 1658^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19725155 + ... + 19725162.

It is an arithmetic number, because the mean of its divisors is an integer number (46025371).

Almost surely, 2^157801268 is an apocalyptic number.

It is an amenable number.

157801268 is a deficient number, since it is larger than the sum of its proper divisors (118350958).

157801268 is a wasteful number, since it uses less digits than its factorization.

157801268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39450321 (or 39450319 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 157801268 is about 12561.8974681375. The cubic root of 157801268 is about 540.3852623354.

The spelling of 157801268 in words is "one hundred fifty-seven million, eight hundred one thousand, two hundred sixty-eight".