149651280 has 160 divisors (see below), whose sum is σ = 522585600. Its totient is φ = 39356928.

The previous prime is 149651269. The next prime is 149651287. The reversal of 149651280 is 82156941.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149651287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170202 + ... + 171078.

It is an arithmetic number, because the mean of its divisors is an integer number (3266160).

Almost surely, 2^149651280 is an apocalyptic number.

149651280 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 149651280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261292800).

149651280 is an abundant number, since it is smaller than the sum of its proper divisors (372934320).

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

149651280 is a wasteful number, since it uses less digits than its factorization.

149651280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 149651280 is about 12233.2039956832. The cubic root of 149651280 is about 530.9172203302.

The spelling of 149651280 in words is "one hundred forty-nine million, six hundred fifty-one thousand, two hundred eighty".