154021264 has 20 divisors (see below), whose sum is σ = 301771980. Its totient is φ = 76144640.

The previous prime is 154021253. The next prime is 154021267. The reversal of 154021264 is 462120451.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 74097664 + 79923600 = 8608^2 + 8940^2 .

It is not an unprimeable number, because it can be changed into a prime (154021267) 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, 52657 + ... + 55504.

It is an arithmetic number, because the mean of its divisors is an integer number (15088599).

Almost surely, 2^154021264 is an apocalyptic number.

It is an amenable number.

154021264 is a deficient number, since it is larger than the sum of its proper divisors (147750716).

154021264 is a wasteful number, since it uses less digits than its factorization.

154021264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108258 (or 108252 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 154021264 is about 12410.5303673937. The cubic root of 154021264 is about 536.0355103822.

The spelling of 154021264 in words is "one hundred fifty-four million, twenty-one thousand, two hundred sixty-four".