149053840 has 80 divisors (see below), whose sum is σ = 375350976. Its totient is φ = 54720000.

The previous prime is 149053831. The next prime is 149053847. The reversal of 149053840 is 48350941.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 149053796 and 149053805.

It is not an unprimeable number, because it can be changed into a prime (149053847) 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, 260755 + ... + 261325.

Almost surely, 2^149053840 is an apocalyptic number.

149053840 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 149053840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187675488).

149053840 is an abundant number, since it is smaller than the sum of its proper divisors (226297136).

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

149053840 is a wasteful number, since it uses less digits than its factorization.

149053840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 149053840 is about 12208.7607888762. The cubic root of 149053840 is about 530.2097662606.

The spelling of 149053840 in words is "one hundred forty-nine million, fifty-three thousand, eight hundred forty".