154872820 has 24 divisors (see below), whose sum is σ = 327235104. Its totient is φ = 61567776.

The previous prime is 154872803. The next prime is 154872821. The reversal of 154872820 is 28278451.

It is a self number, because there is not a number n which added to its sum of digits gives 154872820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154872821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20494 + ... + 27013.

It is an arithmetic number, because the mean of its divisors is an integer number (13634796).

Almost surely, 2^154872820 is an apocalyptic number.

154872820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154872820 is an abundant number, since it is smaller than the sum of its proper divisors (172362284).

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

154872820 is a wasteful number, since it uses less digits than its factorization.

154872820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47679 (or 47677 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 154872820 is about 12444.7908781144. The cubic root of 154872820 is about 537.0215768107.

The spelling of 154872820 in words is "one hundred fifty-four million, eight hundred seventy-two thousand, eight hundred twenty".