157944436 has 12 divisors (see below), whose sum is σ = 297664612. Its totient is φ = 72897408.

The previous prime is 157944419. The next prime is 157944443. The reversal of 157944436 is 634449751.

It can be written as a sum of positive squares in 2 ways, for example, as 58064400 + 99880036 = 7620^2 + 9994^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157944392 and 157944401.

It is a congruent number.

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, 1518645 + ... + 1518748.

Almost surely, 2^157944436 is an apocalyptic number.

It is an amenable number.

157944436 is a deficient number, since it is larger than the sum of its proper divisors (139720176).

157944436 is a wasteful number, since it uses less digits than its factorization.

157944436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037410 (or 3037408 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 157944436 is about 12567.5946783782. The cubic root of 157944436 is about 540.5486376424.

The spelling of 157944436 in words is "one hundred fifty-seven million, nine hundred forty-four thousand, four hundred thirty-six".