149221632 has 144 divisors (see below), whose sum is σ = 465639552. Its totient is φ = 41533440.

The previous prime is 149221627. The next prime is 149221637. The reversal of 149221632 is 236122941.

It is an interprime number because it is at equal distance from previous prime (149221627) and next prime (149221637).

It is a self number, because there is not a number n which added to its sum of digits gives 149221632.

It is not an unprimeable number, because it can be changed into a prime (149221637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220078 + ... + 220754.

It is an arithmetic number, because the mean of its divisors is an integer number (3233608).

Almost surely, 2^149221632 is an apocalyptic number.

149221632 is a gapful number since it is divisible by the number (12) 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 149221632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232819776).

149221632 is an abundant number, since it is smaller than the sum of its proper divisors (316417920).

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

149221632 is an equidigital number, since it uses as much as digits as its factorization.

149221632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 730 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 149221632 is about 12215.6306427462. The cubic root of 149221632 is about 530.4086465107.

The spelling of 149221632 in words is "one hundred forty-nine million, two hundred twenty-one thousand, six hundred thirty-two".