98142780 has 24 divisors (see below), whose sum is σ = 274799952. Its totient is φ = 26171392.

The previous prime is 98142763. The next prime is 98142787. The reversal of 98142780 is 8724189.

It is a super-2 number, since 2×98142780² = 19264010532256800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98142787) 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, 817797 + ... + 817916.

It is an arithmetic number, because the mean of its divisors is an integer number (11449998).

Almost surely, 2^98142780 is an apocalyptic number.

It is an amenable number.

98142780 is an abundant number, since it is smaller than the sum of its proper divisors (176657172).

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

98142780 is a wasteful number, since it uses less digits than its factorization.

98142780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635725 (or 1635723 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 98142780 is about 9906.7037908681. The cubic root of 98142780 is about 461.2674246691.

The spelling of 98142780 in words is "ninety-eight million, one hundred forty-two thousand, seven hundred eighty".