156994424 has 8 divisors (see below), whose sum is σ = 294364560. Its totient is φ = 78497208.

The previous prime is 156994399. The next prime is 156994451. The reversal of 156994424 is 424499651.

It is a tau number, because it is divible by the number of its divisors (8).

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, 9812144 + ... + 9812159.

It is an arithmetic number, because the mean of its divisors is an integer number (36795570).

Almost surely, 2^156994424 is an apocalyptic number.

It is an amenable number.

156994424 is a deficient number, since it is larger than the sum of its proper divisors (137370136).

156994424 is a wasteful number, since it uses less digits than its factorization.

156994424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19624309 (or 19624305 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 156994424 is about 12529.7415775426. The cubic root of 156994424 is about 539.4626845546.

The spelling of 156994424 in words is "one hundred fifty-six million, nine hundred ninety-four thousand, four hundred twenty-four".