154749216 has 24 divisors (see below), whose sum is σ = 406216944. Its totient is φ = 51583040.

The previous prime is 154749193. The next prime is 154749227. The reversal of 154749216 is 612947451.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×154749216² = 47894639705229312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805890 + ... + 806081.

It is an arithmetic number, because the mean of its divisors is an integer number (16925706).

Almost surely, 2^154749216 is an apocalyptic number.

154749216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

154749216 is an abundant number, since it is smaller than the sum of its proper divisors (251467728).

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

154749216 is a wasteful number, since it uses less digits than its factorization.

154749216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611984 (or 1611976 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 154749216 is about 12439.8237929643. The cubic root of 154749216 is about 536.8786731439.

The spelling of 154749216 in words is "one hundred fifty-four million, seven hundred forty-nine thousand, two hundred sixteen".