157343906 has 8 divisors (see below), whose sum is σ = 242394780. Its totient is φ = 76545648.

The previous prime is 157343873. The next prime is 157343929. The reversal of 157343906 is 609343751.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 143017681 + 14326225 = 11959^2 + 3785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 157343906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063061 + ... + 1063208.

Almost surely, 2^157343906 is an apocalyptic number.

157343906 is a deficient number, since it is larger than the sum of its proper divisors (85050874).

157343906 is a wasteful number, since it uses less digits than its factorization.

157343906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126308.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 157343906 is about 12543.6799225746. The cubic root of 157343906 is about 539.8626834204.

The spelling of 157343906 in words is "one hundred fifty-seven million, three hundred forty-three thousand, nine hundred six".