151378220 has 48 divisors (see below), whose sum is σ = 367933440. Its totient is φ = 51240384.

The previous prime is 151378207. The next prime is 151378267. The reversal of 151378220 is 22873151.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4217 + ... + 17903.

It is an arithmetic number, because the mean of its divisors is an integer number (7665280).

Almost surely, 2^151378220 is an apocalyptic number.

151378220 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 151378220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183966720).

151378220 is an abundant number, since it is smaller than the sum of its proper divisors (216555220).

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

151378220 is a wasteful number, since it uses less digits than its factorization.

151378220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13782 (or 13780 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 151378220 is about 12303.5856562223. The cubic root of 151378220 is about 532.9516340063.

The spelling of 151378220 in words is "one hundred fifty-one million, three hundred seventy-eight thousand, two hundred twenty".