151220478 has 16 divisors (see below), whose sum is σ = 305560080. Its totient is φ = 49886976.

The previous prime is 151220477. The next prime is 151220497. The reversal of 151220478 is 874022151.

151220478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151220473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129333 + ... + 130496.

It is an arithmetic number, because the mean of its divisors is an integer number (19097505).

Almost surely, 2^151220478 is an apocalyptic number.

151220478 is an abundant number, since it is smaller than the sum of its proper divisors (154339602).

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

151220478 is a wasteful number, since it uses less digits than its factorization.

151220478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259931.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 151220478 is about 12297.1735776966. The cubic root of 151220478 is about 532.7664508833.

The spelling of 151220478 in words is "one hundred fifty-one million, two hundred twenty thousand, four hundred seventy-eight".