98723540 has 24 divisors (see below), whose sum is σ = 214469640. Its totient is φ = 38127488.

The previous prime is 98723533. The next prime is 98723549. The reversal of 98723540 is 4532789.

It can be written as a sum of positive squares in 4 ways, for example, as 1227664 + 97495876 = 1108^2 + 9874^2 .

It is a junction number, because it is equal to n+sod(n) for n = 98723494 and 98723503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98723549) 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, 84527 + ... + 85686.

It is an arithmetic number, because the mean of its divisors is an integer number (8936235).

Almost surely, 2^98723540 is an apocalyptic number.

It is an amenable number.

98723540 is an abundant number, since it is smaller than the sum of its proper divisors (115746100).

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

98723540 is a wasteful number, since it uses less digits than its factorization.

98723540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170251 (or 170249 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 98723540 is about 9935.9720208946. The cubic root of 98723540 is about 462.1754860170.

The spelling of 98723540 in words is "ninety-eight million, seven hundred twenty-three thousand, five hundred forty".