157122306 has 24 divisors (see below), whose sum is σ = 371380464. Its totient is φ = 47612760.

The previous prime is 157122289. The next prime is 157122307. The reversal of 157122306 is 603221751.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 157122306.

It is not an unprimeable number, because it can be changed into a prime (157122307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396576 + ... + 396971.

It is an arithmetic number, because the mean of its divisors is an integer number (15474186).

Almost surely, 2^157122306 is an apocalyptic number.

157122306 is an abundant number, since it is smaller than the sum of its proper divisors (214258158).

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

157122306 is a wasteful number, since it uses less digits than its factorization.

157122306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793566 (or 793563 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 157122306 is about 12534.8436767277. The cubic root of 157122306 is about 539.6091204218.

The spelling of 157122306 in words is "one hundred fifty-seven million, one hundred twenty-two thousand, three hundred six".