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148240949 = 311476659
BaseRepresentation
bin10001101010111…
…11101000110101
3101022221102100112
420311133220311
5300422202244
622413152405
73450012233
oct1065375065
9338842315
10148240949
117675068a
124178b705
132493434c
141598b953
15d03339e
hex8d5fa35

148240949 has 4 divisors (see below), whose sum is σ = 148717920. Its totient is φ = 147763980.

The previous prime is 148240931. The next prime is 148240973. The reversal of 148240949 is 949042841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 148240949 - 28 = 148240693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148240979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238019 + ... + 238640.

It is an arithmetic number, because the mean of its divisors is an integer number (37179480).

Almost surely, 2148240949 is an apocalyptic number.

It is an amenable number.

148240949 is a deficient number, since it is larger than the sum of its proper divisors (476971).

148240949 is an equidigital number, since it uses as much as digits as its factorization.

148240949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476970.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 148240949 is about 12175.4239761907. The cubic root of 148240949 is about 529.2441450555.

The spelling of 148240949 in words is "one hundred forty-eight million, two hundred forty thousand, nine hundred forty-nine".

Divisors: 1 311 476659 148240949