145856274 has 24 divisors (see below), whose sum is σ = 307878480. Its totient is φ = 46059192.

The previous prime is 145856273. The next prime is 145856287. The reversal of 145856274 is 472658541.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145856273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31504 + ... + 35835.

It is an arithmetic number, because the mean of its divisors is an integer number (12828270).

Almost surely, 2^145856274 is an apocalyptic number.

145856274 is an abundant number, since it is smaller than the sum of its proper divisors (162022206).

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

145856274 is a wasteful number, since it uses less digits than its factorization.

145856274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67382 (or 67363 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 145856274 is about 12077.0970849787. The cubic root of 145856274 is about 526.3908986433.

The spelling of 145856274 in words is "one hundred forty-five million, eight hundred fifty-six thousand, two hundred seventy-four".