151220616 has 32 divisors (see below), whose sum is σ = 391089600. Its totient is φ = 48668480.

The previous prime is 151220603. The next prime is 151220623. The reversal of 151220616 is 616022151.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107940 + ... + 109331.

It is an arithmetic number, because the mean of its divisors is an integer number (12221550).

Almost surely, 2^151220616 is an apocalyptic number.

It is an amenable number.

151220616 is an abundant number, since it is smaller than the sum of its proper divisors (239868984).

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

151220616 is a wasteful number, since it uses less digits than its factorization.

151220616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217309 (or 217305 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 151220616 is about 12297.1791887408. The cubic root of 151220616 is about 532.7666129464.

Adding to 151220616 its reverse (616022151), we get a palindrome (767242767).

The spelling of 151220616 in words is "one hundred fifty-one million, two hundred twenty thousand, six hundred sixteen".