149631020 has 120 divisors (see below), whose sum is σ = 400434720. Its totient is φ = 45999360.

The previous prime is 149630959. The next prime is 149631049. The reversal of 149631020 is 20136941.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2049704 + ... + 2049776.

It is an arithmetic number, because the mean of its divisors is an integer number (3336956).

Almost surely, 2^149631020 is an apocalyptic number.

149631020 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 149631020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200217360).

149631020 is an abundant number, since it is smaller than the sum of its proper divisors (250803700).

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

149631020 is an equidigital number, since it uses as much as digits as its factorization.

149631020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 149631020 is about 12232.3758935049. The cubic root of 149631020 is about 530.8932604765.

Adding to 149631020 its reverse (20136941), we get a palindrome (169767961).

The spelling of 149631020 in words is "one hundred forty-nine million, six hundred thirty-one thousand, twenty".