247429020 has 96 divisors (see below), whose sum is σ = 735436800. Its totient is φ = 61979904.

The previous prime is 247429003. The next prime is 247429031. The reversal of 247429020 is 20924742.

It is a super-2 number, since 2×247429020² = 122442239876320800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143926 + ... + 145634.

It is an arithmetic number, because the mean of its divisors is an integer number (7660800).

Almost surely, 2^247429020 is an apocalyptic number.

247429020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247429020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367718400).

247429020 is an abundant number, since it is smaller than the sum of its proper divisors (488007780).

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

247429020 is a wasteful number, since it uses less digits than its factorization.

247429020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867 (or 1865 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 247429020 is about 15729.8766683023. The cubic root of 247429020 is about 627.7935918143.

The spelling of 247429020 in words is "two hundred forty-seven million, four hundred twenty-nine thousand, twenty".