498157780 has 12 divisors (see below), whose sum is σ = 1046131380. Its totient is φ = 199263104.

The previous prime is 498157763. The next prime is 498157787. The reversal of 498157780 is 87751894.

It can be written as a sum of positive squares in 2 ways, for example, as 143664196 + 354493584 = 11986^2 + 18828^2 .

It is a super-2 number, since 2×498157780² = 496322347549056800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498157787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12453925 + ... + 12453964.

It is an arithmetic number, because the mean of its divisors is an integer number (87177615).

Almost surely, 2^498157780 is an apocalyptic number.

It is an amenable number.

498157780 is an abundant number, since it is smaller than the sum of its proper divisors (547973600).

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

498157780 is a wasteful number, since it uses less digits than its factorization.

498157780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24907898 (or 24907896 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 498157780 is about 22319.4484698883. The cubic root of 498157780 is about 792.7245456986.

The spelling of 498157780 in words is "four hundred ninety-eight million, one hundred fifty-seven thousand, seven hundred eighty".