148451440 has 40 divisors (see below), whose sum is σ = 346571568. Its totient is φ = 59136000.

The previous prime is 148451321. The next prime is 148451441. The reversal of 148451440 is 44154841.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148451441) by changing a digit.

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, 16384 + ... + 23776.

Almost surely, 2^148451440 is an apocalyptic number.

148451440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148451440 is an abundant number, since it is smaller than the sum of its proper divisors (198120128).

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

148451440 is a wasteful number, since it uses less digits than its factorization.

148451440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7657 (or 7651 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 148451440 is about 12184.0650031096. The cubic root of 148451440 is about 529.4945222164.

The spelling of 148451440 in words is "one hundred forty-eight million, four hundred fifty-one thousand, four hundred forty".