156221046 has 12 divisors (see below), whose sum is σ = 338478972. Its totient is φ = 52073676.

The previous prime is 156221033. The next prime is 156221047. The reversal of 156221046 is 640122651.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156221047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4339456 + ... + 4339491.

It is an arithmetic number, because the mean of its divisors is an integer number (28206581).

Almost surely, 2^156221046 is an apocalyptic number.

156221046 is an abundant number, since it is smaller than the sum of its proper divisors (182257926).

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

156221046 is a wasteful number, since it uses less digits than its factorization.

156221046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8678955 (or 8678952 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 156221046 is about 12498.8417863416. The cubic root of 156221046 is about 538.5754013850.

Adding to 156221046 its reverse (640122651), we get a palindrome (796343697).

The spelling of 156221046 in words is "one hundred fifty-six million, two hundred twenty-one thousand, forty-six".