159477640 has 128 divisors (see below), whose sum is σ = 446054400. Its totient is φ = 50077440.

The previous prime is 159477631. The next prime is 159477667. The reversal of 159477640 is 46774951.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164437 + ... + 165403.

It is an arithmetic number, because the mean of its divisors is an integer number (3484800).

Almost surely, 2^159477640 is an apocalyptic number.

159477640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159477640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223027200).

159477640 is an abundant number, since it is smaller than the sum of its proper divisors (286576760).

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

159477640 is a wasteful number, since it uses less digits than its factorization.

159477640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 159477640 is about 12628.4456684107. The cubic root of 159477640 is about 542.2920862256.

The spelling of 159477640 in words is "one hundred fifty-nine million, four hundred seventy-seven thousand, six hundred forty".