148769640 has 96 divisors (see below), whose sum is σ = 489715200. Its totient is φ = 39162240.

The previous prime is 148769629. The next prime is 148769659. The reversal of 148769640 is 46967841.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25825 + ... + 31055.

It is an arithmetic number, because the mean of its divisors is an integer number (5101200).

Almost surely, 2^148769640 is an apocalyptic number.

148769640 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 148769640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244857600).

148769640 is an abundant number, since it is smaller than the sum of its proper divisors (340945560).

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

148769640 is a wasteful number, since it uses less digits than its factorization.

148769640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5327 (or 5320 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 148769640 is about 12197.1160525757. The cubic root of 148769640 is about 529.8725693399.

The spelling of 148769640 in words is "one hundred forty-eight million, seven hundred sixty-nine thousand, six hundred forty".