148022640 has 200 divisors, whose sum is σ = 525019968. Its totient is φ = 38638080.

The previous prime is 148022617. The next prime is 148022647. The reversal of 148022640 is 46220841.

148022640 is a `hidden beast` number, since 14 + 8 + 0 + 2 + 2 + 640 = 666.

148022640 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148022647) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 343225 + ... + 343655.

Almost surely, 2^148022640 is an apocalyptic number.

148022640 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 148022640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262509984).

148022640 is an abundant number, since it is smaller than the sum of its proper divisors (376997328).

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

148022640 is a wasteful number, since it uses less digits than its factorization.

148022640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 148022640 is about 12166.4555232820. The cubic root of 148022640 is about 528.9842179484.

The spelling of 148022640 in words is "one hundred forty-eight million, twenty-two thousand, six hundred forty".