154001972 has 24 divisors (see below), whose sum is σ = 273310632. Its totient is φ = 75920000.

The previous prime is 154001959. The next prime is 154001987. The reversal of 154001972 is 279100451.

It can be written as a sum of positive squares in 4 ways, for example, as 47416996 + 106584976 = 6886^2 + 10324^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 117722 + ... + 119022.

It is an arithmetic number, because the mean of its divisors is an integer number (11387943).

Almost surely, 2^154001972 is an apocalyptic number.

It is an amenable number.

154001972 is a deficient number, since it is larger than the sum of its proper divisors (119308660).

154001972 is a wasteful number, since it uses less digits than its factorization.

154001972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 154001972 is about 12409.7530998808. The cubic root of 154001972 is about 536.0131289945.

The spelling of 154001972 in words is "one hundred fifty-four million, one thousand, nine hundred seventy-two".