149571456 has 64 divisors (see below), whose sum is σ = 400558080. Its totient is φ = 49448448.

The previous prime is 149571449. The next prime is 149571463. The reversal of 149571456 is 654175941.

It is an interprime number because it is at equal distance from previous prime (149571449) and next prime (149571463).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47235 + ... + 50301.

It is an arithmetic number, because the mean of its divisors is an integer number (6258720).

Almost surely, 2^149571456 is an apocalyptic number.

149571456 is a gapful number since it is divisible by the number (16) 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 149571456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200279040).

149571456 is an abundant number, since it is smaller than the sum of its proper divisors (250986624).

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

149571456 is a wasteful number, since it uses less digits than its factorization.

149571456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211 (or 3199 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 149571456 is about 12229.9409646981. The cubic root of 149571456 is about 530.8228064511.

The spelling of 149571456 in words is "one hundred forty-nine million, five hundred seventy-one thousand, four hundred fifty-six".